22001121200100 has 288 divisors, whose sum is σ = 77126821789696. Its totient is φ = 4735077004800.

The previous prime is 22001121200053. The next prime is 22001121200161. The reversal of 22001121200100 is 100212110022.

It is a super-2 number, since 2×22001121200100² (a number of 27 digits) contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 2158312 + ... + 6975711.

Almost surely, 2^{22001121200100} is an apocalyptic number.

22001121200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001121200100 is an abundant number, since it is smaller than the sum of its proper divisors (55125700589596).

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

22001121200100 is a wasteful number, since it uses less digits than its factorization.

22001121200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9134115 (or 9134108 counting only the distinct ones).

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

Adding to 22001121200100 its reverse (100212110022), we get a palindrome (22101333310122).

The spelling of 22001121200100 in words is "twenty-two trillion, one billion, one hundred twenty-one million, two hundred thousand, one hundred".