1021240602265 has 16 divisors (see below), whose sum is σ = 1321514482176. Its totient is φ = 753142680000.

The previous prime is 1021240602253. The next prime is 1021240602271. The reversal of 1021240602265 is 5622060421201.

It is not a de Polignac number, because 1021240602265 - 2²⁹ = 1020703731353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10411501 + ... + 10509130.

It is an arithmetic number, because the mean of its divisors is an integer number (82594655136).

Almost surely, 2^{1021240602265} is an apocalyptic number.

It is an amenable number.

1021240602265 is a deficient number, since it is larger than the sum of its proper divisors (300273879911).

1021240602265 is a wasteful number, since it uses less digits than its factorization.

1021240602265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20921400.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 1021240602265 in words is "one trillion, twenty-one billion, two hundred forty million, six hundred two thousand, two hundred sixty-five".