20012013120 has 448 divisors, whose sum is σ = 71103744000. Its totient is φ = 4728176640.

The previous prime is 20012013089. The next prime is 20012013139. The reversal of 20012013120 is 2131021002.

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 = 20012013096 and 20012013105.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100562781 + ... + 100562979.

Almost surely, 2^20012013120 is an apocalyptic number.

20012013120 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 20012013120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35551872000).

20012013120 is an abundant number, since it is smaller than the sum of its proper divisors (51091730880).

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

20012013120 is a wasteful number, since it uses less digits than its factorization.

20012013120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 416 counting only the distinct ones).

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

Adding to 20012013120 its reverse (2131021002), we get a palindrome (22143034122).

The spelling of 20012013120 in words is "twenty billion, twelve million, thirteen thousand, one hundred twenty".