113031111121 has 2 divisors, whose sum is σ = 113031111122. Its totient is φ = 113031111120.

The previous prime is 113031111119. The next prime is 113031111133. The reversal of 113031111121 is 121111130311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91034958400 + 21996152721 = 301720^2 + 148311^2 .

It is a cyclic number.

It is not a de Polignac number, because 113031111121 - 2¹ = 113031111119 is a prime.

Together with 113031111119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 113031111095 and 113031111104.

It is not a weakly prime, because it can be changed into another prime (113031111421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56515555560 + 56515555561.

It is an arithmetic number, because the mean of its divisors is an integer number (56515555561).

Almost surely, 2^113031111121 is an apocalyptic number.

It is an amenable number.

113031111121 is a deficient number, since it is larger than the sum of its proper divisors (1).

113031111121 is an equidigital number, since it uses as much as digits as its factorization.

113031111121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 113031111121 its reverse (121111130311), we get a palindrome (234142241432).

The spelling of 113031111121 in words is "one hundred thirteen billion, thirty-one million, one hundred eleven thousand, one hundred twenty-one".