122653958381 has 2 divisors, whose sum is σ = 122653958382. Its totient is φ = 122653958380.

The previous prime is 122653958351. The next prime is 122653958407. The reversal of 122653958381 is 183859356221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122531502025 + 122456356 = 350045^2 + 11066^2 .

It is a cyclic number.

It is not a de Polignac number, because 122653958381 - 2¹⁰ = 122653957357 is a prime.

It is a super-2 number, since 2×122653958381² (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 (122653958321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61326979190 + 61326979191.

It is an arithmetic number, because the mean of its divisors is an integer number (61326979191).

Almost surely, 2^122653958381 is an apocalyptic number.

It is an amenable number.

122653958381 is a deficient number, since it is larger than the sum of its proper divisors (1).

122653958381 is an equidigital number, since it uses as much as digits as its factorization.

122653958381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 53.

The spelling of 122653958381 in words is "one hundred twenty-two billion, six hundred fifty-three million, nine hundred fifty-eight thousand, three hundred eighty-one".