12102021199 has 2 divisors, whose sum is σ = 12102021200. Its totient is φ = 12102021198.

The previous prime is 12102021187. The next prime is 12102021221. The reversal of 12102021199 is 99112020121.

It is a weak prime.

It is an emirp because it is prime and its reverse (99112020121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12102021199 - 2⁵ = 12102021167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102021499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051010599 + 6051010600.

It is an arithmetic number, because the mean of its divisors is an integer number (6051010600).

Almost surely, 2^12102021199 is an apocalyptic number.

12102021199 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102021199 is an equidigital number, since it uses as much as digits as its factorization.

12102021199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 12102021199 in words is "twelve billion, one hundred two million, twenty-one thousand, one hundred ninety-nine".