123111302220113 has 2 divisors, whose sum is σ = 123111302220114. Its totient is φ = 123111302220112.

The previous prime is 123111302220061. The next prime is 123111302220119. The reversal of 123111302220113 is 311022203111321.

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., 115435426951744 + 7675875268369 = 10744088^2 + 2770537^2 .

It is a cyclic number.

It is not a de Polignac number, because 123111302220113 - 2¹⁰ = 123111302219089 is a prime.

It is not a weakly prime, because it can be changed into another prime (123111302220119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61555651110056 + 61555651110057.

It is an arithmetic number, because the mean of its divisors is an integer number (61555651110057).

Almost surely, 2^{123111302220113} is an apocalyptic number.

It is an amenable number.

123111302220113 is a deficient number, since it is larger than the sum of its proper divisors (1).

123111302220113 is an equidigital number, since it uses as much as digits as its factorization.

123111302220113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 123111302220113 its reverse (311022203111321), we get a palindrome (434133505331434).

The spelling of 123111302220113 in words is "one hundred twenty-three trillion, one hundred eleven billion, three hundred two million, two hundred twenty thousand, one hundred thirteen".