202112100120 has 64 divisors (see below), whose sum is σ = 692955774720. Its totient is φ = 46197051264.

The previous prime is 202112100119. The next prime is 202112100149. The reversal of 202112100120 is 21001211202.

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

It is a junction number, because it is equal to n+sod(n) for n = 202112100096 and 202112100105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120303982 + ... + 120305661.

It is an arithmetic number, because the mean of its divisors is an integer number (10827433980).

Almost surely, 2^202112100120 is an apocalyptic number.

202112100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202112100120 is an abundant number, since it is smaller than the sum of its proper divisors (490843674600).

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

202112100120 is a wasteful number, since it uses less digits than its factorization.

202112100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240609664 (or 240609660 counting only the distinct ones).

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

Adding to 202112100120 its reverse (21001211202), we get a palindrome (223113311322).

The spelling of 202112100120 in words is "two hundred two billion, one hundred twelve million, one hundred thousand, one hundred twenty".