122666871 has 16 divisors (see below), whose sum is σ = 165016800. Its totient is φ = 81051648.

The previous prime is 122666801. The next prime is 122666899. The reversal of 122666871 is 178666221.

It is not a de Polignac number, because 122666871 - 2¹⁰ = 122665847 is a prime.

It is a super-2 number, since 2×122666871² = 30094322481861282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122666801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299715 + ... + 300123.

It is an arithmetic number, because the mean of its divisors is an integer number (10313550).

Almost surely, 2^122666871 is an apocalyptic number.

122666871 is a deficient number, since it is larger than the sum of its proper divisors (42349929).

122666871 is a wasteful number, since it uses less digits than its factorization.

122666871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058.

The product of its digits is 48384, while the sum is 39.

The square root of 122666871 is about 11075.5077084529. The cubic root of 122666871 is about 496.8696034697.

The spelling of 122666871 in words is "one hundred twenty-two million, six hundred sixty-six thousand, eight hundred seventy-one".