22012220112210 has 48 divisors (see below), whose sum is σ = 57522288948696. Its totient is φ = 5840128783104.

The previous prime is 22012220112139. The next prime is 22012220112227. The reversal of 22012220112210 is 1221102221022.

It is a happy number.

22012220112210 is a `hidden beast` number, since 220 + 1 + 2 + 220 + 1 + 1 + 221 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21886144697169 + 126075415041 = 4678263^2 + 355071^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 620744259 + ... + 620779718.

Almost surely, 2^{22012220112210} is an apocalyptic number.

22012220112210 is an abundant number, since it is smaller than the sum of its proper divisors (35510068836486).

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

22012220112210 is a wasteful number, since it uses less digits than its factorization.

22012220112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241524187 (or 1241524184 counting only the distinct ones).

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

Adding to 22012220112210 its reverse (1221102221022), we get a palindrome (23233322333232).

The spelling of 22012220112210 in words is "twenty-two trillion, twelve billion, two hundred twenty million, one hundred twelve thousand, two hundred ten".