22101590500 has 48 divisors (see below), whose sum is σ = 52658057088. Its totient is φ = 8036940000.

The previous prime is 22101590479. The next prime is 22101590527. The reversal of 22101590500 is 509510122.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2003736 + ... + 2014735.

It is an arithmetic number, because the mean of its divisors is an integer number (1097042856).

Almost surely, 2^22101590500 is an apocalyptic number.

22101590500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101590500 is an abundant number, since it is smaller than the sum of its proper divisors (30556466588).

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

22101590500 is a wasteful number, since it uses less digits than its factorization.

22101590500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018501 (or 4018489 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 22101590500 in words is "twenty-two billion, one hundred one million, five hundred ninety thousand, five hundred".