122551356749 has 2 divisors, whose sum is σ = 122551356750. Its totient is φ = 122551356748.

The previous prime is 122551356713. The next prime is 122551356769. The reversal of 122551356749 is 947653155221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111295632100 + 11255724649 = 333610^2 + 106093^2 .

It is a cyclic number.

It is not a de Polignac number, because 122551356749 - 2¹² = 122551352653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122551356697 and 122551356706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122551356769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61275678374 + 61275678375.

It is an arithmetic number, because the mean of its divisors is an integer number (61275678375).

Almost surely, 2^122551356749 is an apocalyptic number.

It is an amenable number.

122551356749 is a deficient number, since it is larger than the sum of its proper divisors (1).

122551356749 is an equidigital number, since it uses as much as digits as its factorization.

122551356749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268000, while the sum is 50.

The spelling of 122551356749 in words is "one hundred twenty-two billion, five hundred fifty-one million, three hundred fifty-six thousand, seven hundred forty-nine".