199130111 has 2 divisors, whose sum is σ = 199130112. Its totient is φ = 199130110.

The previous prime is 199130101. The next prime is 199130123. The reversal of 199130111 is 111031991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199130111 is a prime.

It is a super-2 number, since 2×199130111² = 79305602213744642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199130101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99565055 + 99565056.

It is an arithmetic number, because the mean of its divisors is an integer number (99565056).

Almost surely, 2^199130111 is an apocalyptic number.

199130111 is a deficient number, since it is larger than the sum of its proper divisors (1).

199130111 is an equidigital number, since it uses as much as digits as its factorization.

199130111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 26.

The square root of 199130111 is about 14111.3468882315. The cubic root of 199130111 is about 583.9544584725.

The spelling of 199130111 in words is "one hundred ninety-nine million, one hundred thirty thousand, one hundred eleven".