20012120123120 has 20 divisors (see below), whose sum is σ = 46528179286440. Its totient is φ = 8004848049216.

The previous prime is 20012120123113. The next prime is 20012120123123. The reversal of 20012120123120 is 2132102121002.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012120123123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125075750690 + ... + 125075750849.

It is an arithmetic number, because the mean of its divisors is an integer number (2326408964322).

Almost surely, 2^{20012120123120} is an apocalyptic number.

20012120123120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012120123120 is an abundant number, since it is smaller than the sum of its proper divisors (26516059163320).

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

20012120123120 is a wasteful number, since it uses less digits than its factorization.

20012120123120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250151501552 (or 250151501546 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20012120123120 its reverse (2132102121002), we get a palindrome (22144222244122).

The spelling of 20012120123120 in words is "twenty trillion, twelve billion, one hundred twenty million, one hundred twenty-three thousand, one hundred twenty".