20120013120 has 112 divisors (see below), whose sum is σ = 64304558208. Its totient is φ = 5329766400.

The previous prime is 20120013091. The next prime is 20120013127. The reversal of 20120013120 is 2131002102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20120013096 and 20120013105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120013127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75562 + ... + 214358.

Almost surely, 2^20120013120 is an apocalyptic number.

20120013120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20120013120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32152279104).

20120013120 is an abundant number, since it is smaller than the sum of its proper divisors (44184545088).

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

20120013120 is a wasteful number, since it uses less digits than its factorization.

20120013120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138968 (or 138958 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20120013120 its reverse (2131002102), we get a palindrome (22251015222).

The spelling of 20120013120 in words is "twenty billion, one hundred twenty million, thirteen thousand, one hundred twenty".