20221020122210 has 32 divisors (see below), whose sum is σ = 36571198455792. Its totient is φ = 8049924126720.

The previous prime is 20221020122159. The next prime is 20221020122243. The reversal of 20221020122210 is 1222102012202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4352484960121 + 15868535162089 = 2086261^2 + 3983533^2 .

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, 1382414 + ... + 6507926.

Almost surely, 2^{20221020122210} is an apocalyptic number.

20221020122210 is a deficient number, since it is larger than the sum of its proper divisors (16350178333582).

20221020122210 is a wasteful number, since it uses less digits than its factorization.

20221020122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127398.

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

Adding to 20221020122210 its reverse (1222102012202), we get a palindrome (21443122134412).

The spelling of 20221020122210 in words is "twenty trillion, two hundred twenty-one billion, twenty million, one hundred twenty-two thousand, two hundred ten".