122280251 has 2 divisors, whose sum is σ = 122280252. Its totient is φ = 122280250.

The previous prime is 122280187. The next prime is 122280271. The reversal of 122280251 is 152082221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122280251 - 2⁶ = 122280187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122280271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61140125 + 61140126.

It is an arithmetic number, because the mean of its divisors is an integer number (61140126).

Almost surely, 2^122280251 is an apocalyptic number.

122280251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122280251 is an equidigital number, since it uses as much as digits as its factorization.

122280251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 122280251 is about 11058.0401066373. The cubic root of 122280251 is about 496.3470448308.

The spelling of 122280251 in words is "one hundred twenty-two million, two hundred eighty thousand, two hundred fifty-one".