422212652172 has 48 divisors (see below), whose sum is σ = 1094885416800. Its totient is φ = 140704119360.

The previous prime is 422212652167. The next prime is 422212652179. The reversal of 422212652172 is 271256212224.

422212652172 is a `hidden beast` number, since 4 + 2 + 2 + 2 + 126 + 521 + 7 + 2 = 666.

It is a super-2 number, since 2×422212652172² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (422212652179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5479 + ... + 918942.

It is an arithmetic number, because the mean of its divisors is an integer number (22810112850).

Almost surely, 2^422212652172 is an apocalyptic number.

It is an amenable number.

422212652172 is an abundant number, since it is smaller than the sum of its proper divisors (672672764628).

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

422212652172 is a wasteful number, since it uses less digits than its factorization.

422212652172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928663 (or 928655 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

Adding to 422212652172 its reverse (271256212224), we get a palindrome (693468864396).

The spelling of 422212652172 in words is "four hundred twenty-two billion, two hundred twelve million, six hundred fifty-two thousand, one hundred seventy-two".