22171968200 has 36 divisors (see below), whose sum is σ = 51554722515. Its totient is φ = 8867944960.

The previous prime is 22171968199. The next prime is 22171968311. The reversal of 22171968200 is 286917122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 15226079236 + 6945888964 = 123394^2 + 83342^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105290.

It is a super-2 number, since 2×22171968200² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2100536 + ... + 2111064.

Almost surely, 2^22171968200 is an apocalyptic number.

22171968200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22171968200 is an abundant number, since it is smaller than the sum of its proper divisors (29382754315).

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

22171968200 is an frugal number, since it uses more digits than its factorization.

22171968200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21074 (or 10536 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 22171968200 in words is "twenty-two billion, one hundred seventy-one million, nine hundred sixty-eight thousand, two hundred".