12121199 has 8 divisors (see below), whose sum is σ = 12480720. Its totient is φ = 11764800.

The previous prime is 12121157. The next prime is 12121211. The reversal of 12121199 is 99112121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121099) 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, 8744 + ... + 10034.

It is an arithmetic number, because the mean of its divisors is an integer number (1560090).

Almost surely, 2^12121199 is an apocalyptic number.

12121199 is a deficient number, since it is larger than the sum of its proper divisors (359521).

12121199 is a wasteful number, since it uses less digits than its factorization.

12121199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its digits is 324, while the sum is 26.

The square root of 12121199 is about 3481.5512347228. The cubic root of 12121199 is about 229.7110359734.

The spelling of 12121199 in words is "twelve million, one hundred twenty-one thousand, one hundred ninety-nine".