122598871 has 4 divisors (see below), whose sum is σ = 125912392. Its totient is φ = 119285352.

The previous prime is 122598857. The next prime is 122598907. The reversal of 122598871 is 178895221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178895221 = 71 ⋅2519651.

It is a cyclic number.

It is not a de Polignac number, because 122598871 - 2⁷ = 122598743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122598821) 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, 1656705 + ... + 1656778.

It is an arithmetic number, because the mean of its divisors is an integer number (31478098).

Almost surely, 2^122598871 is an apocalyptic number.

122598871 is a deficient number, since it is larger than the sum of its proper divisors (3313521).

122598871 is an equidigital number, since it uses as much as digits as its factorization.

122598871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313520.

The product of its digits is 80640, while the sum is 43.

The square root of 122598871 is about 11072.4374461995. The cubic root of 122598871 is about 496.7777737906. Note that the first 5 decimals are identical.

The spelling of 122598871 in words is "one hundred twenty-two million, five hundred ninety-eight thousand, eight hundred seventy-one".