122601005257 has 4 divisors (see below), whose sum is σ = 122658539536. Its totient is φ = 122543470980.

The previous prime is 122601005251. The next prime is 122601005299. The reversal of 122601005257 is 752500106221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752500106221 = 154643 ⋅4866047.

It is a cyclic number.

It is not a de Polignac number, because 122601005257 - 2¹⁹ = 122600480969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122601005251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28763943 + ... + 28768204.

It is an arithmetic number, because the mean of its divisors is an integer number (30664634884).

Almost surely, 2^122601005257 is an apocalyptic number.

It is an amenable number.

122601005257 is a deficient number, since it is larger than the sum of its proper divisors (57534279).

122601005257 is an equidigital number, since it uses as much as digits as its factorization.

122601005257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57534278.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 122601005257 in words is "one hundred twenty-two billion, six hundred one million, five thousand, two hundred fifty-seven".