123220110131 has 2 divisors, whose sum is σ = 123220110132. Its totient is φ = 123220110130.

The previous prime is 123220110121. The next prime is 123220110149. The reversal of 123220110131 is 131011022321.

It is a weak prime.

It is an emirp because it is prime and its reverse (131011022321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123220110131 is a prime.

It is a super-2 number, since 2×123220110131² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (123220110121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610055065 + 61610055066.

It is an arithmetic number, because the mean of its divisors is an integer number (61610055066).

Almost surely, 2^123220110131 is an apocalyptic number.

123220110131 is a deficient number, since it is larger than the sum of its proper divisors (1).

123220110131 is an equidigital number, since it uses as much as digits as its factorization.

123220110131 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 123220110131 its reverse (131011022321), we get a palindrome (254231132452).

The spelling of 123220110131 in words is "one hundred twenty-three billion, two hundred twenty million, one hundred ten thousand, one hundred thirty-one".