22116621600 has 108 divisors (see below), whose sum is σ = 77988762306. Its totient is φ = 5897763840.

The previous prime is 22116621581. The next prime is 22116621601. The reversal of 22116621600 is 612661122.

22116621600 is a `hidden beast` number, since 2 + 21 + 16 + 6 + 21 + 600 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 15608004624 + 6508616976 = 124932^2 + 80676^2 .

It is not an unprimeable number, because it can be changed into a prime (22116621601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1528677 + ... + 1543076.

Almost surely, 2^22116621600 is an apocalyptic number.

22116621600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22116621600 is an abundant number, since it is smaller than the sum of its proper divisors (55872140706).

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

22116621600 is a wasteful number, since it uses less digits than its factorization.

22116621600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071779 (or 3071763 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 22116621600 in words is "twenty-two billion, one hundred sixteen million, six hundred twenty-one thousand, six hundred".