22101520520 has 32 divisors (see below), whose sum is σ = 49742622720. Its totient is φ = 8838083520.

The previous prime is 22101520471. The next prime is 22101520543. The reversal of 22101520520 is 2502510122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22101520492 and 22101520501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66215 + ... + 220425.

It is an arithmetic number, because the mean of its divisors is an integer number (1554456960).

Almost surely, 2^22101520520 is an apocalyptic number.

22101520520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101520520 is an abundant number, since it is smaller than the sum of its proper divisors (27641102200).

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

22101520520 is a wasteful number, since it uses less digits than its factorization.

22101520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157805 (or 157801 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 22101520520 in words is "twenty-two billion, one hundred one million, five hundred twenty thousand, five hundred twenty".