22420131520 has 56 divisors (see below), whose sum is σ = 53877819600. Its totient is φ = 8885763072.

The previous prime is 22420131509. The next prime is 22420131529. The reversal of 22420131520 is 2513102422.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22420131491 and 22420131500.

It is not an unprimeable number, because it can be changed into a prime (22420131529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286510 + ... + 356269.

Almost surely, 2^22420131520 is an apocalyptic number.

22420131520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22420131520 is an abundant number, since it is smaller than the sum of its proper divisors (31457688080).

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

22420131520 is a wasteful number, since it uses less digits than its factorization.

22420131520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642905 (or 642895 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 22420131520 its reverse (2513102422), we get a palindrome (24933233942).

The spelling of 22420131520 in words is "twenty-two billion, four hundred twenty million, one hundred thirty-one thousand, five hundred twenty".