102222111987 has 48 divisors (see below), whose sum is σ = 158115784320. Its totient is φ = 63413127936.

The previous prime is 102222111949. The next prime is 102222112009. The reversal of 102222111987 is 789111222201.

It is not a de Polignac number, because 102222111987 - 2⁸ = 102222111731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102222111917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8556064 + ... + 8568002.

It is an arithmetic number, because the mean of its divisors is an integer number (3294078840).

Almost surely, 2^102222111987 is an apocalyptic number.

102222111987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

102222111987 is a deficient number, since it is larger than the sum of its proper divisors (55893672333).

102222111987 is a wasteful number, since it uses less digits than its factorization.

102222111987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12592 (or 12589 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 102222111987 in words is "one hundred two billion, two hundred twenty-two million, one hundred eleven thousand, nine hundred eighty-seven".