20111112199 has 2 divisors, whose sum is σ = 20111112200. Its totient is φ = 20111112198.

The previous prime is 20111112193. The next prime is 20111112221. The reversal of 20111112199 is 99121111102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20111112199 - 2²³ = 20102723591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111112193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055556099 + 10055556100.

It is an arithmetic number, because the mean of its divisors is an integer number (10055556100).

Almost surely, 2^20111112199 is an apocalyptic number.

20111112199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111112199 is an equidigital number, since it uses as much as digits as its factorization.

20111112199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 20111112199 in words is "twenty billion, one hundred eleven million, one hundred twelve thousand, one hundred ninety-nine".