122130987 has 24 divisors (see below), whose sum is σ = 179613840. Its totient is φ = 73761600.

The previous prime is 122130973. The next prime is 122130991. The reversal of 122130987 is 789031221.

It is not a de Polignac number, because 122130987 - 2⁷ = 122130859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (122130997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184437 + ... + 185097.

It is an arithmetic number, because the mean of its divisors is an integer number (7483910).

Almost surely, 2^122130987 is an apocalyptic number.

122130987 is a deficient number, since it is larger than the sum of its proper divisors (57482853).

122130987 is a wasteful number, since it uses less digits than its factorization.

122130987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 122130987 is about 11051.2889293512. The cubic root of 122130987 is about 496.1450037262.

The spelling of 122130987 in words is "one hundred twenty-two million, one hundred thirty thousand, nine hundred eighty-seven".