22200002121 has 32 divisors (see below), whose sum is σ = 32847897600. Its totient is φ = 13222843200.

The previous prime is 22200002113. The next prime is 22200002161. The reversal of 22200002121 is 12120000222.

It is not a de Polignac number, because 22200002121 - 2³ = 22200002113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22200002097 and 22200002106.

It is not an unprimeable number, because it can be changed into a prime (22200002161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2812246 + ... + 2820128.

It is an arithmetic number, because the mean of its divisors is an integer number (1026496800).

Almost surely, 2^22200002121 is an apocalyptic number.

It is an amenable number.

22200002121 is a deficient number, since it is larger than the sum of its proper divisors (10647895479).

22200002121 is a wasteful number, since it uses less digits than its factorization.

22200002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9357.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22200002121 its reverse (12120000222), we get a palindrome (34320002343).

The spelling of 22200002121 in words is "twenty-two billion, two hundred million, two thousand, one hundred twenty-one".