20201000120 has 64 divisors (see below), whose sum is σ = 53212420800. Its totient is φ = 6757125120.

The previous prime is 20201000093. The next prime is 20201000129. The reversal of 20201000120 is 2100010202.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 20201000098 and 20201000107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201000129) 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, 868355 + ... + 891314.

It is an arithmetic number, because the mean of its divisors is an integer number (831444075).

Almost surely, 2^20201000120 is an apocalyptic number.

20201000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201000120 is an abundant number, since it is smaller than the sum of its proper divisors (33011420680).

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

20201000120 is a wasteful number, since it uses less digits than its factorization.

20201000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759728 (or 1759724 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20201000120 its reverse (2100010202), we get a palindrome (22301010322).

The spelling of 20201000120 in words is "twenty billion, two hundred one million, one hundred twenty", and thus it is an aban number.