202122022122 has 12 divisors (see below), whose sum is σ = 437931047970. Its totient is φ = 67374007368.

The previous prime is 202122022117. The next prime is 202122022147. The reversal of 202122022122 is 221220221202.

202122022122 is a `hidden beast` number, since 202 + 1 + 220 + 221 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 168420772881 + 33701249241 = 410391^2 + 183579^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11229001229 = 202122022122 / (2 + 0 + 2 + 1 + 2 + 2 + 0 + 2 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 202122022095 and 202122022104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5614500597 + ... + 5614500632.

Almost surely, 2^202122022122 is an apocalyptic number.

202122022122 is an abundant number, since it is smaller than the sum of its proper divisors (235809025848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202122022122 is a wasteful number, since it uses less digits than its factorization.

202122022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11229001237 (or 11229001234 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202122022122 its reverse (221220221202), we get a palindrome (423342243324).

The spelling of 202122022122 in words is "two hundred two billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-two".