RSA can only encrypt data that's smaller than the key. The data, plus padding (as defined by the RSA encryption standard, OAEP, or by the deprecated PKCS#1 v1.5 method), must fit in fewer bits than the modulus.
It would be possible in principle to define encryption modes for RSA in the same way that is done for block ciphers, but nobody does it because it is a lot slower than using a hybrid cryptosystem and has zero security benefit. To transmit more data than fits in RSA, you use RSA to encrypt a secret key for a symmetric cipher and the symmetric cipher to encrypt the actual data.
Even using a symmetric cipher such as AES-GCM or AES-CBC to transmit a one-time pad would be pointless since the security of the whole system is bounded by the security of the AES-based transmission. You might as well transmit an AES key: it'll be less data to send, allows you to subsequently encrypt as much data as you like, and is just as secure.