2122001111987 has 2 divisors, whose sum is σ = 2122001111988. Its totient is φ = 2122001111986.

The previous prime is 2122001111983. The next prime is 2122001112019. The reversal of 2122001111987 is 7891111002212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122001111987 - 2² = 2122001111983 is a prime.

It is not a weakly prime, because it can be changed into another prime (2122001111983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061000555993 + 1061000555994.

It is an arithmetic number, because the mean of its divisors is an integer number (1061000555994).

Almost surely, 2^{2122001111987} is an apocalyptic number.

2122001111987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122001111987 is an equidigital number, since it uses as much as digits as its factorization.

2122001111987 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 35.

The spelling of 2122001111987 in words is "two trillion, one hundred twenty-two billion, one million, one hundred eleven thousand, nine hundred eighty-seven".