20013100113 has 12 divisors (see below), whose sum is σ = 27350846864. Its totient is φ = 13016647200.

The previous prime is 20013100109. The next prime is 20013100171. The reversal of 20013100113 is 31100131002.

It is not a de Polignac number, because 20013100113 - 2² = 20013100109 is a prime.

It is a super-2 number, since 2×20013100113² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013102113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1979203 + ... + 1989288.

Almost surely, 2^20013100113 is an apocalyptic number.

It is an amenable number.

20013100113 is a deficient number, since it is larger than the sum of its proper divisors (7337746751).

20013100113 is an equidigital number, since it uses as much as digits as its factorization.

20013100113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968576 (or 3968535 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 20013100113 its reverse (31100131002), we get a palindrome (51113231115).

The spelling of 20013100113 in words is "twenty billion, thirteen million, one hundred thousand, one hundred thirteen".