22121011210 has 32 divisors (see below), whose sum is σ = 41968063440. Its totient is φ = 8382087168.

The previous prime is 22121011183. The next prime is 22121011229. The reversal of 22121011210 is 1211012122.

It can be written as a sum of positive squares in 8 ways, for example, as 17463358201 + 4657653009 = 132149^2 + 68247^2 .

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, 704247 + ... + 734986.

Almost surely, 2^22121011210 is an apocalyptic number.

22121011210 is a deficient number, since it is larger than the sum of its proper divisors (19847052230).

22121011210 is a wasteful number, since it uses less digits than its factorization.

22121011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439322.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22121011210 its reverse (1211012122), we get a palindrome (23332023332).

The spelling of 22121011210 in words is "twenty-two billion, one hundred twenty-one million, eleven thousand, two hundred ten".