122159971 has 8 divisors (see below), whose sum is σ = 123542784. Its totient is φ = 120785280.

The previous prime is 122159963. The next prime is 122159993. The reversal of 122159971 is 179951221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122159971 - 2³ = 122159963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122159971.

It is not an unprimeable number, because it can be changed into a prime (122159071) 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 7 ways as a sum of consecutive naturals, for example, 31195 + ... + 34891.

It is an arithmetic number, because the mean of its divisors is an integer number (15442848).

Almost surely, 2^122159971 is an apocalyptic number.

122159971 is a deficient number, since it is larger than the sum of its proper divisors (1382813).

122159971 is a wasteful number, since it uses less digits than its factorization.

122159971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061.

The product of its digits is 11340, while the sum is 37.

The square root of 122159971 is about 11052.6001918101. The cubic root of 122159971 is about 496.1842488289.

The spelling of 122159971 in words is "one hundred twenty-two million, one hundred fifty-nine thousand, nine hundred seventy-one".