20112199 has 2 divisors, whose sum is σ = 20112200. Its totient is φ = 20112198.

The previous prime is 20112179. The next prime is 20112217. The reversal of 20112199 is 99121102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20112199 - 2⁹ = 20111687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056099 + 10056100.

It is an arithmetic number, because the mean of its divisors is an integer number (10056100).

Almost surely, 2^20112199 is an apocalyptic number.

20112199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112199 is an equidigital number, since it uses as much as digits as its factorization.

20112199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 20112199 is about 4484.6626406007. The cubic root of 20112199 is about 271.9484069892.

The spelling of 20112199 in words is "twenty million, one hundred twelve thousand, one hundred ninety-nine".