201212022120 has 64 divisors (see below), whose sum is σ = 619950568320. Its totient is φ = 52206361344.

The previous prime is 201212022119. The next prime is 201212022133. The reversal of 201212022120 is 21220212102.

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 201212022120.

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, 22654572 + ... + 22663451.

It is an arithmetic number, because the mean of its divisors is an integer number (9686727630).

Almost surely, 2^201212022120 is an apocalyptic number.

201212022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212022120 is an abundant number, since it is smaller than the sum of its proper divisors (418738546200).

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

201212022120 is a wasteful number, since it uses less digits than its factorization.

201212022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45318074 (or 45318070 counting only the distinct ones).

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

Adding to 201212022120 its reverse (21220212102), we get a palindrome (222432234222).

The spelling of 201212022120 in words is "two hundred one billion, two hundred twelve million, twenty-two thousand, one hundred twenty".