22055571500 has 24 divisors (see below), whose sum is σ = 48169369248. Its totient is φ = 8822228400.

The previous prime is 22055571497. The next prime is 22055571509. The reversal of 22055571500 is 517555022.

It is a super-2 number, since 2×22055571500² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22055571509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22055072 + ... + 22056071.

It is an arithmetic number, because the mean of its divisors is an integer number (2007057052).

Almost surely, 2^22055571500 is an apocalyptic number.

22055571500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22055571500 is an abundant number, since it is smaller than the sum of its proper divisors (26113797748).

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

22055571500 is a wasteful number, since it uses less digits than its factorization.

22055571500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44111162 (or 44111150 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 32.

The spelling of 22055571500 in words is "twenty-two billion, fifty-five million, five hundred seventy-one thousand, five hundred".