122887169 has 4 divisors (see below), whose sum is σ = 130115844. Its totient is φ = 115658496.

The previous prime is 122887159. The next prime is 122887189. The reversal of 122887169 is 961788221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961788221 = 1693 ⋅568097.

It can be written as a sum of positive squares in 2 ways, for example, as 78996544 + 43890625 = 8888^2 + 6625^2 .

It is a cyclic number.

It is not a de Polignac number, because 122887169 - 2¹² = 122883073 is a prime.

It is a super-2 number, since 2×122887169² = 30202512609669122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122887109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3614312 + ... + 3614345.

It is an arithmetic number, because the mean of its divisors is an integer number (32528961).

Almost surely, 2^122887169 is an apocalyptic number.

It is an amenable number.

122887169 is a deficient number, since it is larger than the sum of its proper divisors (7228675).

122887169 is an equidigital number, since it uses as much as digits as its factorization.

122887169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228674.

The product of its digits is 96768, while the sum is 44.

The square root of 122887169 is about 11085.4485249808. The cubic root of 122887169 is about 497.1668690588.

The spelling of 122887169 in words is "one hundred twenty-two million, eight hundred eighty-seven thousand, one hundred sixty-nine".