22001113500 has 48 divisors (see below), whose sum is σ = 64067246880. Its totient is φ = 5866963200.

The previous prime is 22001113487. The next prime is 22001113513. The reversal of 22001113500 is 531110022.

It is an interprime number because it is at equal distance from previous prime (22001113487) and next prime (22001113513).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22001113500.

It is a congruent number.

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, 7332205 + ... + 7335204.

It is an arithmetic number, because the mean of its divisors is an integer number (1334734310).

Almost surely, 2^22001113500 is an apocalyptic number.

22001113500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001113500 is an abundant number, since it is smaller than the sum of its proper divisors (42066133380).

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

22001113500 is a wasteful number, since it uses less digits than its factorization.

22001113500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14667431 (or 14667419 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 22001113500 its reverse (531110022), we get a palindrome (22532223522).

The spelling of 22001113500 in words is "twenty-two billion, one million, one hundred thirteen thousand, five hundred".