199921233107 has 2 divisors, whose sum is σ = 199921233108. Its totient is φ = 199921233106.

The previous prime is 199921233047. The next prime is 199921233137. The reversal of 199921233107 is 701332129991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199921233107 - 2²⁸ = 199652797651 is a prime.

It is not a weakly prime, because it can be changed into another prime (199921233137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99960616553 + 99960616554.

It is an arithmetic number, because the mean of its divisors is an integer number (99960616554).

Almost surely, 2^199921233107 is an apocalyptic number.

199921233107 is a deficient number, since it is larger than the sum of its proper divisors (1).

199921233107 is an equidigital number, since it uses as much as digits as its factorization.

199921233107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 47.

The spelling of 199921233107 in words is "one hundred ninety-nine billion, nine hundred twenty-one million, two hundred thirty-three thousand, one hundred seven".