20111320101013 has 16 divisors (see below), whose sum is σ = 20784116851200. Its totient is φ = 19440038946240.

The previous prime is 20111320101001. The next prime is 20111320101017. The reversal of 20111320101013 is 31010102311102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20111320101013 - 2²⁵ = 20111286546581 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 (20111320101017) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 95654518 + ... + 95864536.

It is an arithmetic number, because the mean of its divisors is an integer number (1299007303200).

Almost surely, 2^{20111320101013} is an apocalyptic number.

It is an amenable number.

20111320101013 is a deficient number, since it is larger than the sum of its proper divisors (672796750187).

20111320101013 is a wasteful number, since it uses less digits than its factorization.

20111320101013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213612.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20111320101013 its reverse (31010102311102), we get a palindrome (51121422412115).

The spelling of 20111320101013 in words is "twenty trillion, one hundred eleven billion, three hundred twenty million, one hundred one thousand, thirteen".