212002122120 has 64 divisors (see below), whose sum is σ = 648006505920. Its totient is φ = 55467220224.

The previous prime is 212002122109. The next prime is 212002122161. The reversal of 212002122120 is 21221200212.

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 212002122120.

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, 16660474 + ... + 16673193.

It is an arithmetic number, because the mean of its divisors is an integer number (10125101655).

Almost surely, 2^212002122120 is an apocalyptic number.

212002122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212002122120 is an abundant number, since it is smaller than the sum of its proper divisors (436004383800).

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

212002122120 is a wasteful number, since it uses less digits than its factorization.

212002122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33333734 (or 33333730 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212002122120 its reverse (21221200212), we get a palindrome (233223322332).

The spelling of 212002122120 in words is "two hundred twelve billion, two million, one hundred twenty-two thousand, one hundred twenty".