122369987 has 2 divisors, whose sum is σ = 122369988. Its totient is φ = 122369986.

The previous prime is 122369981. The next prime is 122370007. The reversal of 122369987 is 789963221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122369987 - 2¹⁰ = 122368963 is a prime.

It is not a weakly prime, because it can be changed into another prime (122369981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61184993 + 61184994.

It is an arithmetic number, because the mean of its divisors is an integer number (61184994).

Almost surely, 2^122369987 is an apocalyptic number.

122369987 is a deficient number, since it is larger than the sum of its proper divisors (1).

122369987 is an equidigital number, since it uses as much as digits as its factorization.

122369987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 122369987 is about 11062.0968627110. The cubic root of 122369987 is about 496.4684307650.

The spelling of 122369987 in words is "one hundred twenty-two million, three hundred sixty-nine thousand, nine hundred eighty-seven".