12102121199 has 8 divisors (see below), whose sum is σ = 13837716480. Its totient is φ = 10368206136.

The previous prime is 12102121189. The next prime is 12102121253. The reversal of 12102121199 is 99112120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12102121199 - 2²⁰ = 12101072623 is a prime.

It is a super-2 number, since 2×12102121199² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102121159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404579 + ... + 433460.

It is an arithmetic number, because the mean of its divisors is an integer number (1729714560).

Almost surely, 2^12102121199 is an apocalyptic number.

12102121199 is a deficient number, since it is larger than the sum of its proper divisors (1735595281).

12102121199 is an equidigital number, since it uses as much as digits as its factorization.

12102121199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840109.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 12102121199 in words is "twelve billion, one hundred two million, one hundred twenty-one thousand, one hundred ninety-nine".