201121022204 has 24 divisors (see below), whose sum is σ = 358626326688. Its totient is φ = 98656608960.

The previous prime is 201121022177. The next prime is 201121022243. The reversal of 201121022204 is 402220121102.

It is a super-2 number, since 2×201121022204² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5331449 + ... + 5369039.

It is an arithmetic number, because the mean of its divisors is an integer number (14942763612).

Almost surely, 2^201121022204 is an apocalyptic number.

It is an amenable number.

201121022204 is a deficient number, since it is larger than the sum of its proper divisors (157505304484).

201121022204 is a wasteful number, since it uses less digits than its factorization.

201121022204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62885 (or 62883 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201121022204 its reverse (402220121102), we get a palindrome (603341143306).

The spelling of 201121022204 in words is "two hundred one billion, one hundred twenty-one million, twenty-two thousand, two hundred four".