20121622200 has 72 divisors (see below), whose sum is σ = 67575120600. Its totient is φ = 5365765440.

The previous prime is 20121622177. The next prime is 20121622201. The reversal of 20121622200 is 222612102.

20121622200 is a `hidden beast` number, since 2 + 0 + 1 + 21 + 622 + 20 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121622201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5587540 + ... + 5591139.

Almost surely, 2^20121622200 is an apocalyptic number.

20121622200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121622200 is an abundant number, since it is smaller than the sum of its proper divisors (47453498400).

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

20121622200 is a wasteful number, since it uses less digits than its factorization.

20121622200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11178701 (or 11178689 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The spelling of 20121622200 in words is "twenty billion, one hundred twenty-one million, six hundred twenty-two thousand, two hundred".