122556171 has 4 divisors (see below), whose sum is σ = 163408232. Its totient is φ = 81704112.

The previous prime is 122556169. The next prime is 122556197. The reversal of 122556171 is 171655221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171655221 = 3 ⋅57218407.

It is not a de Polignac number, because 122556171 - 2¹ = 122556169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122556101) 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, 20426026 + ... + 20426031.

It is an arithmetic number, because the mean of its divisors is an integer number (40852058).

Almost surely, 2^122556171 is an apocalyptic number.

122556171 is a deficient number, since it is larger than the sum of its proper divisors (40852061).

122556171 is an equidigital number, since it uses as much as digits as its factorization.

122556171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40852060.

The product of its digits is 4200, while the sum is 30.

The square root of 122556171 is about 11070.5090668858. The cubic root of 122556171 is about 496.7200927969.

The spelling of 122556171 in words is "one hundred twenty-two million, five hundred fifty-six thousand, one hundred seventy-one".