20112100202100 has 36 divisors (see below), whose sum is σ = 58191009918944. Its totient is φ = 5363226720480.

The previous prime is 20112100202023. The next prime is 20112100202113. The reversal of 20112100202100 is 120200121102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33520166704 + ... + 33520167303.

Almost surely, 2^{20112100202100} is an apocalyptic number.

20112100202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112100202100 is an abundant number, since it is smaller than the sum of its proper divisors (38078909716844).

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

20112100202100 is a wasteful number, since it uses less digits than its factorization.

20112100202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67040334024 (or 67040334017 counting only the distinct ones).

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

Adding to 20112100202100 its reverse (120200121102), we get a palindrome (20232300323202).

The spelling of 20112100202100 in words is "twenty trillion, one hundred twelve billion, one hundred million, two hundred two thousand, one hundred".