20113020100013 has 4 divisors (see below), whose sum is σ = 20113034934300. Its totient is φ = 20113005265728.

The previous prime is 20113020099983. The next prime is 20113020100141. The reversal of 20113020100013 is 31000102031102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6714799411849 + 13398220688164 = 2591293^2 + 3660358^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113020100013 - 2³⁸ = 19838142193069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113020100813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5152988 + ... + 8171861.

It is an arithmetic number, because the mean of its divisors is an integer number (5028258733575).

Almost surely, 2^{20113020100013} is an apocalyptic number.

It is an amenable number.

20113020100013 is a deficient number, since it is larger than the sum of its proper divisors (14834287).

20113020100013 is a wasteful number, since it uses less digits than its factorization.

20113020100013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14834286.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20113020100013 its reverse (31000102031102), we get a palindrome (51113122131115).

The spelling of 20113020100013 in words is "twenty trillion, one hundred thirteen billion, twenty million, one hundred thousand, thirteen".