123220110253 has 2 divisors, whose sum is σ = 123220110254. Its totient is φ = 123220110252.

The previous prime is 123220110149. The next prime is 123220110313. The reversal of 123220110253 is 352011022321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93781100169 + 29439010084 = 306237^2 + 171578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123220110253 is a prime.

It is a super-2 number, since 2×123220110253² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123220111253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610055126 + 61610055127.

It is an arithmetic number, because the mean of its divisors is an integer number (61610055127).

Almost surely, 2^123220110253 is an apocalyptic number.

It is an amenable number.

123220110253 is a deficient number, since it is larger than the sum of its proper divisors (1).

123220110253 is an equidigital number, since it uses as much as digits as its factorization.

123220110253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 123220110253 its reverse (352011022321), we get a palindrome (475231132574).

The spelling of 123220110253 in words is "one hundred twenty-three billion, two hundred twenty million, one hundred ten thousand, two hundred fifty-three".