199023211 has 2 divisors, whose sum is σ = 199023212. Its totient is φ = 199023210.

The previous prime is 199023203. The next prime is 199023217. The reversal of 199023211 is 112320991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199023211 - 2³ = 199023203 is a prime.

It is a super-2 number, since 2×199023211² = 79220477033501042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 199023211.

It is not a weakly prime, because it can be changed into another prime (199023217) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99511605 + 99511606.

It is an arithmetic number, because the mean of its divisors is an integer number (99511606).

Almost surely, 2^199023211 is an apocalyptic number.

199023211 is a deficient number, since it is larger than the sum of its proper divisors (1).

199023211 is an equidigital number, since it uses as much as digits as its factorization.

199023211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 199023211 is about 14107.5586477604. The cubic root of 199023211 is about 583.8499440502.

The spelling of 199023211 in words is "one hundred ninety-nine million, twenty-three thousand, two hundred eleven".