10113013121 has 2 divisors, whose sum is σ = 10113013122. Its totient is φ = 10113013120.

The previous prime is 10113013111. The next prime is 10113013151. The reversal of 10113013121 is 12131031101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8645280400 + 1467732721 = 92980^2 + 38311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10113013121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10113013096 and 10113013105.

It is not a weakly prime, because it can be changed into another prime (10113013111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5056506560 + 5056506561.

It is an arithmetic number, because the mean of its divisors is an integer number (5056506561).

Almost surely, 2^10113013121 is an apocalyptic number.

It is an amenable number.

10113013121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10113013121 is an equidigital number, since it uses as much as digits as its factorization.

10113013121 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 14.

Adding to 10113013121 its reverse (12131031101), we get a palindrome (22244044222).

The spelling of 10113013121 in words is "ten billion, one hundred thirteen million, thirteen thousand, one hundred twenty-one".