122120119987 has 2 divisors, whose sum is σ = 122120119988. Its totient is φ = 122120119986.

The previous prime is 122120119981. The next prime is 122120119997. The reversal of 122120119987 is 789911021221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122120119987 - 2⁷ = 122120119859 is a prime.

It is not a weakly prime, because it can be changed into another prime (122120119981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060059993 + 61060059994.

It is an arithmetic number, because the mean of its divisors is an integer number (61060059994).

Almost surely, 2^122120119987 is an apocalyptic number.

122120119987 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120119987 is an equidigital number, since it uses as much as digits as its factorization.

122120119987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 122120119987 in words is "one hundred twenty-two billion, one hundred twenty million, one hundred nineteen thousand, nine hundred eighty-seven".