22012120021100 has 144 divisors (see below), whose sum is σ = 52841362269696. Its totient is φ = 7891940160000.

The previous prime is 22012120021069. The next prime is 22012120021123. The reversal of 22012120021100 is 112002121022.

It is a super-2 number, since 2×22012120021100² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 231778625 + ... + 231873575.

Almost surely, 2^{22012120021100} is an apocalyptic number.

22012120021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012120021100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26420681134848).

22012120021100 is an abundant number, since it is smaller than the sum of its proper divisors (30829242248596).

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

22012120021100 is a wasteful number, since it uses less digits than its factorization.

22012120021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97936 (or 97929 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22012120021100 its reverse (112002121022), we get a palindrome (22124122142122).

The spelling of 22012120021100 in words is "twenty-two trillion, twelve billion, one hundred twenty million, twenty-one thousand, one hundred".