22021200000100 has 54 divisors (see below), whose sum is σ = 55587800584050. Its totient is φ = 7550125712640.

The previous prime is 22021200000083. The next prime is 22021200000101. The reversal of 22021200000100 is 100000212022.

It can be written as a sum of positive squares in 3 ways, for example, as 4491101885284 + 17530098114816 = 2119222^2 + 4186896^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (22021200000101) 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, 2247056325 + ... + 2247066124.

Almost surely, 2^{22021200000100} is an apocalyptic number.

22021200000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021200000100 is an abundant number, since it is smaller than the sum of its proper divisors (33566600583950).

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

22021200000100 is a wasteful number, since it uses less digits than its factorization.

22021200000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494122477 (or 4494122463 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22021200000100 its reverse (100000212022), we get a palindrome (22121200212122).

The spelling of 22021200000100 in words is "twenty-two trillion, twenty-one billion, two hundred million, one hundred", and thus it is an aban number.