122159977 has 24 divisors (see below), whose sum is σ = 138279960. Its totient is φ = 107412480.

The previous prime is 122159963. The next prime is 122159993. The reversal of 122159977 is 779951221.

It can be written as a sum of positive squares in 12 ways, for example, as 1687401 + 120472576 = 1299^2 + 10976^2 .

It is not a de Polignac number, because 122159977 - 2¹⁵ = 122127209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122159777) 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 23 ways as a sum of consecutive naturals, for example, 674827 + ... + 675007.

It is an arithmetic number, because the mean of its divisors is an integer number (5761665).

Almost surely, 2^122159977 is an apocalyptic number.

122159977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

122159977 is a deficient number, since it is larger than the sum of its proper divisors (16119983).

122159977 is a wasteful number, since it uses less digits than its factorization.

122159977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 264 counting only the distinct ones).

The product of its digits is 79380, while the sum is 43.

The square root of 122159977 is about 11052.6004632394. The cubic root of 122159977 is about 496.1842569524.

The spelling of 122159977 in words is "one hundred twenty-two million, one hundred fifty-nine thousand, nine hundred seventy-seven".