12102199965 has 24 divisors (see below), whose sum is σ = 21071232000. Its totient is φ = 6425557344.

The previous prime is 12102199937. The next prime is 12102199987. The reversal of 12102199965 is 56999120121.

It is not a de Polignac number, because 12102199965 - 2⁵ = 12102199933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12102199965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 592965 + ... + 613034.

It is an arithmetic number, because the mean of its divisors is an integer number (877968000).

Almost surely, 2^12102199965 is an apocalyptic number.

12102199965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12102199965 is a deficient number, since it is larger than the sum of its proper divisors (8969032035).

12102199965 is a wasteful number, since it uses less digits than its factorization.

12102199965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206233 (or 1206230 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 12102199965 in words is "twelve billion, one hundred two million, one hundred ninety-nine thousand, nine hundred sixty-five".