20111102131113 has 54 divisors (see below), whose sum is σ = 35325226432314. Its totient is φ = 10992403521792.

The previous prime is 20111102131111. The next prime is 20111102131199. The reversal of 20111102131113 is 31113120111102.

It can be written as a sum of positive squares in only one way, i.e., 20107798525584 + 3303605529 = 4484172^2 + 57477^2 .

It is not a de Polignac number, because 20111102131113 - 2¹ = 20111102131111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111102131111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 42870120 + ... + 43336697.

Almost surely, 2^{20111102131113} is an apocalyptic number.

20111102131113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20111102131113 is a deficient number, since it is larger than the sum of its proper divisors (15214124301201).

20111102131113 is a wasteful number, since it uses less digits than its factorization.

20111102131113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86206883 (or 86206850 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 20111102131113 its reverse (31113120111102), we get a palindrome (51224222242215).

The spelling of 20111102131113 in words is "twenty trillion, one hundred eleven billion, one hundred two million, one hundred thirty-one thousand, one hundred thirteen".