122171869 has 4 divisors (see below), whose sum is σ = 122448096. Its totient is φ = 121895644.

The previous prime is 122171857. The next prime is 122171873. The reversal of 122171869 is 968171221.

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: 968171221 = 863 ⋅1121867.

It is a cyclic number.

It is not a de Polignac number, because 122171869 - 2¹¹ = 122169821 is a prime.

It is a super-2 number, since 2×122171869² = 29851931149906322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122171849) 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, 137449 + ... + 138334.

It is an arithmetic number, because the mean of its divisors is an integer number (30612024).

Almost surely, 2^122171869 is an apocalyptic number.

It is an amenable number.

122171869 is a deficient number, since it is larger than the sum of its proper divisors (276227).

122171869 is an equidigital number, since it uses as much as digits as its factorization.

122171869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276226.

The product of its digits is 12096, while the sum is 37.

The square root of 122171869 is about 11053.1384230905. The cubic root of 122171869 is about 496.2003572385.

It can be divided in two parts, 122 and 171869, that added together give a triangular number (171991 = T₅₈₆).

The spelling of 122171869 in words is "one hundred twenty-two million, one hundred seventy-one thousand, eight hundred sixty-nine".