20113133100 has 72 divisors (see below), whose sum is σ = 58240678608. Its totient is φ = 5359200000.

The previous prime is 20113133093. The next prime is 20113133119. The reversal of 20113133100 is 133131102.

It is a super-2 number, since 2×20113133100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20113133100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 356850 + ... + 409350.

It is an arithmetic number, because the mean of its divisors is an integer number (808898314).

Almost surely, 2^20113133100 is an apocalyptic number.

20113133100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113133100 is an abundant number, since it is smaller than the sum of its proper divisors (38127545508).

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

20113133100 is a wasteful number, since it uses less digits than its factorization.

20113133100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53795 (or 53788 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 20113133100 its reverse (133131102), we get a palindrome (20246264202).

The spelling of 20113133100 in words is "twenty billion, one hundred thirteen million, one hundred thirty-three thousand, one hundred".