122257427 has 2 divisors, whose sum is σ = 122257428. Its totient is φ = 122257426.

The previous prime is 122257411. The next prime is 122257463. The reversal of 122257427 is 724752221.

It is a weak prime.

It is an emirp because it is prime and its reverse (724752221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122257427 - 2⁴ = 122257411 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122257393 and 122257402.

It is not a weakly prime, because it can be changed into another prime (122254427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61128713 + 61128714.

It is an arithmetic number, because the mean of its divisors is an integer number (61128714).

Almost surely, 2^122257427 is an apocalyptic number.

122257427 is a deficient number, since it is larger than the sum of its proper divisors (1).

122257427 is an equidigital number, since it uses as much as digits as its factorization.

122257427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 32.

The square root of 122257427 is about 11057.0080491967. The cubic root of 122257427 is about 496.3161613214.

The spelling of 122257427 in words is "one hundred twenty-two million, two hundred fifty-seven thousand, four hundred twenty-seven".