20112111199 has 2 divisors, whose sum is σ = 20112111200. Its totient is φ = 20112111198.

The previous prime is 20112111197. The next prime is 20112111209. The reversal of 20112111199 is 99111121102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20112111199 - 2¹ = 20112111197 is a prime.

Together with 20112111197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112111197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056055599 + 10056055600.

It is an arithmetic number, because the mean of its divisors is an integer number (10056055600).

Almost surely, 2^20112111199 is an apocalyptic number.

20112111199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112111199 is an equidigital number, since it uses as much as digits as its factorization.

20112111199 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 28.

The spelling of 20112111199 in words is "twenty billion, one hundred twelve million, one hundred eleven thousand, one hundred ninety-nine".