20112222102210 has 144 divisors (see below), whose sum is σ = 62473243745016. Its totient is φ = 4472833913856.

The previous prime is 20112222102209. The next prime is 20112222102223. The reversal of 20112222102210 is 1220122221102.

It is a happy number.

20112222102210 is a `hidden beast` number, since 2 + 0 + 11 + 222 + 210 + 221 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13451502481641 + 6660719620569 = 3667629^2 + 2580837^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 61466487 + ... + 61792826.

Almost surely, 2^{20112222102210} is an apocalyptic number.

20112222102210 is an abundant number, since it is smaller than the sum of its proper divisors (42361021642806).

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

20112222102210 is a wasteful number, since it uses less digits than its factorization.

20112222102210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123259377 (or 123259367 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20112222102210 its reverse (1220122221102), we get a palindrome (21332344323312).

The spelling of 20112222102210 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-two million, one hundred two thousand, two hundred ten".