22021202121010 has 32 divisors (see below), whose sum is σ = 39746074258800. Its totient is φ = 8784507605760.

The previous prime is 22021202120989. The next prime is 22021202121011. The reversal of 22021202121010 is 1012120212022.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6634544729121 + 15386657391889 = 2575761^2 + 3922583^2 .

It is not an unprimeable number, because it can be changed into a prime (22021202121011) 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, 25486356 + ... + 26336224.

Almost surely, 2^{22021202121010} is an apocalyptic number.

22021202121010 is a deficient number, since it is larger than the sum of its proper divisors (17724872137790).

22021202121010 is a wasteful number, since it uses less digits than its factorization.

22021202121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856926.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22021202121010 its reverse (1012120212022), we get a palindrome (23033322333032).

The spelling of 22021202121010 in words is "twenty-two trillion, twenty-one billion, two hundred two million, one hundred twenty-one thousand, ten".