201221011122 has 96 divisors (see below), whose sum is σ = 456991258752. Its totient is φ = 58750534656.

The previous prime is 201221011109. The next prime is 201221011141. The reversal of 201221011122 is 221110122102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3180348 + ... + 3243000.

It is an arithmetic number, because the mean of its divisors is an integer number (4760325612).

Almost surely, 2^201221011122 is an apocalyptic number.

201221011122 is an abundant number, since it is smaller than the sum of its proper divisors (255770247630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201221011122 is a wasteful number, since it uses less digits than its factorization.

201221011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62772 (or 62735 counting only the distinct ones).

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

Adding to 201221011122 its reverse (221110122102), we get a palindrome (422331133224).

The spelling of 201221011122 in words is "two hundred one billion, two hundred twenty-one million, eleven thousand, one hundred twenty-two".