20122212120 has 32 divisors (see below), whose sum is σ = 60366636720. Its totient is φ = 5365923200.

The previous prime is 20122212079. The next prime is 20122212151. The reversal of 20122212120 is 2121222102.

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 20122212120.

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, 83842431 + ... + 83842670.

Almost surely, 2^20122212120 is an apocalyptic number.

20122212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122212120 is an abundant number, since it is smaller than the sum of its proper divisors (40244424600).

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

20122212120 is a wasteful number, since it uses less digits than its factorization.

20122212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167685115 (or 167685111 counting only the distinct ones).

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

Adding to 20122212120 its reverse (2121222102), we get a palindrome (22243434222).

The spelling of 20122212120 in words is "twenty billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty".