20021113120 has 48 divisors (see below), whose sum is σ = 47672368128. Its totient is φ = 7945378560.

The previous prime is 20021113097. The next prime is 20021113127. The reversal of 20021113120 is 2131112002.

It is a super-2 number, since 2×20021113120² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20021113120.

It is not an unprimeable number, because it can be changed into a prime (20021113127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472326 + ... + 512965.

It is an arithmetic number, because the mean of its divisors is an integer number (993174336).

Almost surely, 2^20021113120 is an apocalyptic number.

20021113120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021113120 is an abundant number, since it is smaller than the sum of its proper divisors (27651255008).

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

20021113120 is a wasteful number, since it uses less digits than its factorization.

20021113120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985433 (or 985425 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20021113120 its reverse (2131112002), we get a palindrome (22152225122).

The spelling of 20021113120 in words is "twenty billion, twenty-one million, one hundred thirteen thousand, one hundred twenty".