12212123199 has 4 divisors (see below), whose sum is σ = 16282830936. Its totient is φ = 8141415464.

The previous prime is 12212123197. The next prime is 12212123279. The reversal of 12212123199 is 99132121221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12212123199 - 2¹ = 12212123197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212123191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035353864 + ... + 2035353869.

It is an arithmetic number, because the mean of its divisors is an integer number (4070707734).

Almost surely, 2^12212123199 is an apocalyptic number.

12212123199 is a deficient number, since it is larger than the sum of its proper divisors (4070707737).

12212123199 is an equidigital number, since it uses as much as digits as its factorization.

12212123199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070707736.

The product of its digits is 3888, while the sum is 33.

The spelling of 12212123199 in words is "twelve billion, two hundred twelve million, one hundred twenty-three thousand, one hundred ninety-nine".