122110987 has 2 divisors, whose sum is σ = 122110988. Its totient is φ = 122110986.

The previous prime is 122110957. The next prime is 122111021. The reversal of 122110987 is 789011221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122110987 - 2¹⁵ = 122078219 is a prime.

It is a super-2 number, since 2×122110987² = 29822186292228338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122110957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055493 + 61055494.

It is an arithmetic number, because the mean of its divisors is an integer number (61055494).

Almost surely, 2^122110987 is an apocalyptic number.

122110987 is a deficient number, since it is larger than the sum of its proper divisors (1).

122110987 is an equidigital number, since it uses as much as digits as its factorization.

122110987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 122110987 is about 11050.3840204764. The cubic root of 122110987 is about 496.1179195766.

The spelling of 122110987 in words is "one hundred twenty-two million, one hundred ten thousand, nine hundred eighty-seven".