122168809 has 9 divisors (see below), whose sum is σ = 142204797. Its totient is φ = 104649804.

The previous prime is 122168759. The next prime is 122168821. The reversal of 122168809 is 908861221.

The square root of 122168809 is 11053.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 122168809 - 2⁹ = 122168297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122168899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 76582 + ... + 78160.

It is an arithmetic number, because the mean of its divisors is an integer number (15800533).

Almost surely, 2^122168809 is an apocalyptic number.

122168809 is the 11053-rd square number.

122168809 is the 5527-th centered octagonal number.

It is an amenable number.

122168809 is a deficient number, since it is larger than the sum of its proper divisors (20035988).

122168809 is an frugal number, since it uses more digits than its factorization.

122168809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The cubic root of 122168809 is about 496.1962144796.

It can be divided in two parts, 12216 and 8809, that added together give a square (21025 = 145²).

The spelling of 122168809 in words is "one hundred twenty-two million, one hundred sixty-eight thousand, eight hundred nine".