12187987214 has 32 divisors (see below), whose sum is σ = 19800746784. Its totient is φ = 5593167360.

The previous prime is 12187987213. The next prime is 12187987223. The reversal of 12187987214 is 41278978121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12187987211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8001857 + ... + 8003379.

It is an arithmetic number, because the mean of its divisors is an integer number (618773337).

Almost surely, 2^12187987214 is an apocalyptic number.

12187987214 is a deficient number, since it is larger than the sum of its proper divisors (7612759570).

12187987214 is a wasteful number, since it uses less digits than its factorization.

12187987214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092.

The product of its digits is 451584, while the sum is 50.

The spelling of 12187987214 in words is "twelve billion, one hundred eighty-seven million, nine hundred eighty-seven thousand, two hundred fourteen".