51222404022 has 32 divisors (see below), whose sum is σ = 102770467200. Its totient is φ = 17019932160.

The previous prime is 51222404021. The next prime is 51222404033. The reversal of 51222404022 is 22040422215.

It is a junction number, because it is equal to n+sod(n) for n = 51222403983 and 51222404001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51222404021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3016897 + ... + 3033827.

It is an arithmetic number, because the mean of its divisors is an integer number (3211577100).

Almost surely, 2^51222404022 is an apocalyptic number.

51222404022 is an abundant number, since it is smaller than the sum of its proper divisors (51548063178).

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

51222404022 is a wasteful number, since it uses less digits than its factorization.

51222404022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18508.

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 51222404022 its reverse (22040422215), we get a palindrome (73262826237).

The spelling of 51222404022 in words is "fifty-one billion, two hundred twenty-two million, four hundred four thousand, twenty-two".