102222101987 has 4 divisors (see below), whose sum is σ = 102873198336. Its totient is φ = 101571005640.

The previous prime is 102222101977. The next prime is 102222102011. The reversal of 102222101987 is 789101222201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789101222201 = 17 ⋅46417718953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102222101987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102222101977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325547939 + ... + 325548252.

It is an arithmetic number, because the mean of its divisors is an integer number (25718299584).

Almost surely, 2^102222101987 is an apocalyptic number.

102222101987 is a deficient number, since it is larger than the sum of its proper divisors (651096349).

102222101987 is an equidigital number, since it uses as much as digits as its factorization.

102222101987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651096348.

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 102222101987 in words is "one hundred two billion, two hundred twenty-two million, one hundred one thousand, nine hundred eighty-seven".