113230120121 has 2 divisors, whose sum is σ = 113230120122. Its totient is φ = 113230120120.

The previous prime is 113230120109. The next prime is 113230120139. The reversal of 113230120121 is 121021032311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87018510121 + 26211610000 = 294989^2 + 161900^2 .

It is an emirp because it is prime and its reverse (121021032311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113230120121 - 2¹⁴ = 113230103737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113230120121.

It is not a weakly prime, because it can be changed into another prime (113230120181) 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 as a sum of consecutive naturals, namely, 56615060060 + 56615060061.

It is an arithmetic number, because the mean of its divisors is an integer number (56615060061).

Almost surely, 2^113230120121 is an apocalyptic number.

It is an amenable number.

113230120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

113230120121 is an equidigital number, since it uses as much as digits as its factorization.

113230120121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 113230120121 its reverse (121021032311), we get a palindrome (234251152432).

The spelling of 113230120121 in words is "one hundred thirteen billion, two hundred thirty million, one hundred twenty thousand, one hundred twenty-one".