212101000120 has 32 divisors (see below), whose sum is σ = 478669054320. Its totient is φ = 84584079360.

The previous prime is 212101000079. The next prime is 212101000141. The reversal of 212101000120 is 21000101212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 212101000097 and 212101000106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7996617 + ... + 8023096.

Almost surely, 2^212101000120 is an apocalyptic number.

212101000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101000120 is an abundant number, since it is smaller than the sum of its proper divisors (266568054200).

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

212101000120 is a wasteful number, since it uses less digits than its factorization.

212101000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16020055 (or 16020051 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 212101000120 its reverse (21000101212), we get a palindrome (233101101332).

The spelling of 212101000120 in words is "two hundred twelve billion, one hundred one million, one hundred twenty", and thus it is an aban number.