20113011131117 has 2 divisors, whose sum is σ = 20113011131118. Its totient is φ = 20113011131116.

The previous prime is 20113011131077. The next prime is 20113011131153. The reversal of 20113011131117 is 71113111031102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12408950297956 + 7704060833161 = 3522634^2 + 2775619^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113011131117 - 2⁶ = 20113011131053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20113011131092 and 20113011131101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113011131167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056505565558 + 10056505565559.

It is an arithmetic number, because the mean of its divisors is an integer number (10056505565559).

Almost surely, 2^{20113011131117} is an apocalyptic number.

It is an amenable number.

20113011131117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113011131117 is an equidigital number, since it uses as much as digits as its factorization.

20113011131117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 23.

Adding to 20113011131117 its reverse (71113111031102), we get a palindrome (91226122162219).

The spelling of 20113011131117 in words is "twenty trillion, one hundred thirteen billion, eleven million, one hundred thirty-one thousand, one hundred seventeen".