122768251 has 2 divisors, whose sum is σ = 122768252. Its totient is φ = 122768250.

The previous prime is 122768249. The next prime is 122768263. The reversal of 122768251 is 152867221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122768251 - 2¹ = 122768249 is a prime.

Together with 122768249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (122768201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61384125 + 61384126.

It is an arithmetic number, because the mean of its divisors is an integer number (61384126).

Almost surely, 2^122768251 is an apocalyptic number.

122768251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122768251 is an equidigital number, since it uses as much as digits as its factorization.

122768251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 34.

The square root of 122768251 is about 11080.0835285660. The cubic root of 122768251 is about 497.0064477246.

The spelling of 122768251 in words is "one hundred twenty-two million, seven hundred sixty-eight thousand, two hundred fifty-one".