20201122210 has 16 divisors (see below), whose sum is σ = 36562918392. Its totient is φ = 8035804800.

The previous prime is 20201122181. The next prime is 20201122213. The reversal of 20201122210 is 1222110202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4282000969 + 15919121241 = 65437^2 + 126171^2 .

It is not an unprimeable number, because it can be changed into a prime (20201122213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5578611 + ... + 5582230.

Almost surely, 2^20201122210 is an apocalyptic number.

20201122210 is a deficient number, since it is larger than the sum of its proper divisors (16361796182).

20201122210 is a wasteful number, since it uses less digits than its factorization.

20201122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11161029.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20201122210 its reverse (1222110202), we get a palindrome (21423232412).

The spelling of 20201122210 in words is "twenty billion, two hundred one million, one hundred twenty-two thousand, two hundred ten".