20113021120 has 56 divisors (see below), whose sum is σ = 48341822544. Its totient is φ = 7970006016.

The previous prime is 20113021091. The next prime is 20113021127. The reversal of 20113021120 is 2112031102.

It is a self number, because there is not a number n which added to its sum of digits gives 20113021120.

It is not an unprimeable number, because it can be changed into a prime (20113021127) 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, 259467 + ... + 327946.

Almost surely, 2^20113021120 is an apocalyptic number.

20113021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113021120 is an abundant number, since it is smaller than the sum of its proper divisors (28228801424).

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

20113021120 is a wasteful number, since it uses less digits than its factorization.

20113021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587537 (or 587527 counting only the distinct ones).

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

Adding to 20113021120 its reverse (2112031102), we get a palindrome (22225052222).

The spelling of 20113021120 in words is "twenty billion, one hundred thirteen million, twenty-one thousand, one hundred twenty".