122121100987 has 2 divisors, whose sum is σ = 122121100988. Its totient is φ = 122121100986.

The previous prime is 122121100939. The next prime is 122121101023. The reversal of 122121100987 is 789001121221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122121100987 - 2¹⁵ = 122121068219 is a prime.

It is not a weakly prime, because it can be changed into another prime (122121100487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060550493 + 61060550494.

It is an arithmetic number, because the mean of its divisors is an integer number (61060550494).

Almost surely, 2^122121100987 is an apocalyptic number.

122121100987 is a deficient number, since it is larger than the sum of its proper divisors (1).

122121100987 is an equidigital number, since it uses as much as digits as its factorization.

122121100987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 122121100987 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred thousand, nine hundred eighty-seven".