122021200987 has 12 divisors (see below), whose sum is σ = 147178721136. Its totient is φ = 99084882960.

The previous prime is 122021200969. The next prime is 122021200997. The reversal of 122021200987 is 789002120221.

It is not a de Polignac number, because 122021200987 - 2²⁷ = 121886983259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122021200937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24140964 + ... + 24146017.

It is an arithmetic number, because the mean of its divisors is an integer number (12264893428).

Almost surely, 2^122021200987 is an apocalyptic number.

122021200987 is a deficient number, since it is larger than the sum of its proper divisors (25157520149).

122021200987 is an equidigital number, since it uses as much as digits as its factorization.

122021200987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48287026 (or 48287007 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 122021200987 in words is "one hundred twenty-two billion, twenty-one million, two hundred thousand, nine hundred eighty-seven".