20112021200100 has 72 divisors (see below), whose sum is σ = 58342715827200. Its totient is φ = 5349202474880.

The previous prime is 20112021199993. The next prime is 20112021200203. The reversal of 20112021200100 is 100212021102.

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 23 ways as a sum of consecutive naturals, for example, 87404775 + ... + 87634574.

It is an arithmetic number, because the mean of its divisors is an integer number (810315497600).

Almost surely, 2^{20112021200100} is an apocalyptic number.

20112021200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112021200100 is an abundant number, since it is smaller than the sum of its proper divisors (38230694627100).

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

20112021200100 is a wasteful number, since it uses less digits than its factorization.

20112021200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175039749 (or 175039742 counting only the distinct ones).

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

Adding to 20112021200100 its reverse (100212021102), we get a palindrome (20212233221202).

The spelling of 20112021200100 in words is "twenty trillion, one hundred twelve billion, twenty-one million, two hundred thousand, one hundred".