20212112100120 has 64 divisors (see below), whose sum is σ = 60636634823520. Its totient is φ = 5389870024704.

The previous prime is 20212112100107. The next prime is 20212112100121. The reversal of 20212112100120 is 2100121121202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20212112100120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212112100121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42446874 + ... + 42920406.

Almost surely, 2^{20212112100120} is an apocalyptic number.

20212112100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212112100120 is an abundant number, since it is smaller than the sum of its proper divisors (40424522723400).

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

20212112100120 is a wasteful number, since it uses less digits than its factorization.

20212112100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829244 (or 829240 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20212112100120 its reverse (2100121121202), we get a palindrome (22312233221322).

The spelling of 20212112100120 in words is "twenty trillion, two hundred twelve billion, one hundred twelve million, one hundred thousand, one hundred twenty".