22021120100100 has 108 divisors (see below), whose sum is σ = 70033228458032. Its totient is φ = 5338453348800.

The previous prime is 22021120100093. The next prime is 22021120100149. The reversal of 22021120100100 is 100102112022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 303284914 + ... + 303357513.

Almost surely, 2^{22021120100100} is an apocalyptic number.

22021120100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021120100100 is an abundant number, since it is smaller than the sum of its proper divisors (48012108357932).

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

22021120100100 is a wasteful number, since it uses less digits than its factorization.

22021120100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606642466 (or 606642448 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22021120100100 its reverse (100102112022), we get a palindrome (22121222212122).

The spelling of 22021120100100 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, one hundred thousand, one hundred".