20164232120 has 32 divisors (see below), whose sum is σ = 45416527200. Its totient is φ = 8057336448.

The previous prime is 20164232107. The next prime is 20164232149. The reversal of 20164232120 is 2123246102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221975 + ... + 299334.

It is an arithmetic number, because the mean of its divisors is an integer number (1419266475).

Almost surely, 2^20164232120 is an apocalyptic number.

20164232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20164232120 is an abundant number, since it is smaller than the sum of its proper divisors (25252295080).

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

20164232120 is a wasteful number, since it uses less digits than its factorization.

20164232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522287 (or 522283 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20164232120 its reverse (2123246102), we get a palindrome (22287478222).

The spelling of 20164232120 in words is "twenty billion, one hundred sixty-four million, two hundred thirty-two thousand, one hundred twenty".