22501312016 has 20 divisors (see below), whose sum is σ = 44774571372. Its totient is φ = 10946583936.

The previous prime is 22501312007. The next prime is 22501312073. The reversal of 22501312016 is 61021310522.

It can be written as a sum of positive squares in 2 ways, for example, as 19879872016 + 2621440000 = 140996^2 + 51200^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22501311982 and 22501312000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19003895 + ... + 19005078.

Almost surely, 2^22501312016 is an apocalyptic number.

It is an amenable number.

22501312016 is a deficient number, since it is larger than the sum of its proper divisors (22273259356).

22501312016 is a wasteful number, since it uses less digits than its factorization.

22501312016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38009018 (or 38009012 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 22501312016 its reverse (61021310522), we get a palindrome (83522622538).

The spelling of 22501312016 in words is "twenty-two billion, five hundred one million, three hundred twelve thousand, sixteen".