201102122121 has 16 divisors (see below), whose sum is σ = 279911116800. Its totient is φ = 128185473680.

The previous prime is 201102122113. The next prime is 201102122129. The reversal of 201102122121 is 121221201102.

It is an interprime number because it is at equal distance from previous prime (201102122113) and next prime (201102122129).

It is a cyclic number.

It is not a de Polignac number, because 201102122121 - 2³ = 201102122113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201102122121.

It is not an unprimeable number, because it can be changed into a prime (201102122129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441915 + ... + 772976.

It is an arithmetic number, because the mean of its divisors is an integer number (17494444800).

Almost surely, 2^201102122121 is an apocalyptic number.

It is an amenable number.

201102122121 is a deficient number, since it is larger than the sum of its proper divisors (78808994679).

201102122121 is a wasteful number, since it uses less digits than its factorization.

201102122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217316.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201102122121 its reverse (121221201102), we get a palindrome (322323323223).

The spelling of 201102122121 in words is "two hundred one billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty-one".