22001522440 has 32 divisors (see below), whose sum is σ = 50342472000. Its totient is φ = 8651445184.

The previous prime is 22001522437. The next prime is 22001522471. The reversal of 22001522440 is 4422510022.

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, 4658980 + ... + 4663699.

It is an arithmetic number, because the mean of its divisors is an integer number (1573202250).

Almost surely, 2^22001522440 is an apocalyptic number.

22001522440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001522440 is an abundant number, since it is smaller than the sum of its proper divisors (28340949560).

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

22001522440 is a wasteful number, since it uses less digits than its factorization.

22001522440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322749 (or 9322745 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The spelling of 22001522440 in words is "twenty-two billion, one million, five hundred twenty-two thousand, four hundred forty".