20112905224 has 96 divisors (see below), whose sum is σ = 42372930600. Its totient is φ = 8913551360.

The previous prime is 20112905213. The next prime is 20112905251. The reversal of 20112905224 is 42250921102.

It can be written as a sum of positive squares in 12 ways, for example, as 5548760100 + 14564145124 = 74490^2 + 120682^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20112905192 and 20112905201.

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, 4687272 + ... + 4691560.

Almost surely, 2^20112905224 is an apocalyptic number.

It is an amenable number.

20112905224 is an abundant number, since it is smaller than the sum of its proper divisors (22260025376).

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

20112905224 is a wasteful number, since it uses less digits than its factorization.

20112905224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411 (or 4378 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 20112905224 in words is "twenty billion, one hundred twelve million, nine hundred five thousand, two hundred twenty-four".