199791120371 has 2 divisors, whose sum is σ = 199791120372. Its totient is φ = 199791120370.

The previous prime is 199791120367. The next prime is 199791120421. The reversal of 199791120371 is 173021197991.

It is an a-pointer prime, because the next prime (199791120421) can be obtained adding 199791120371 to its sum of digits (50).

It is a weak prime.

It is an emirp because it is prime and its reverse (173021197991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199791120371 - 2² = 199791120367 is a prime.

It is a super-2 number, since 2×199791120371² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (199791120301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99895560185 + 99895560186.

It is an arithmetic number, because the mean of its divisors is an integer number (99895560186).

Almost surely, 2^199791120371 is an apocalyptic number.

199791120371 is a deficient number, since it is larger than the sum of its proper divisors (1).

199791120371 is an equidigital number, since it uses as much as digits as its factorization.

199791120371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 50.

The spelling of 199791120371 in words is "one hundred ninety-nine billion, seven hundred ninety-one million, one hundred twenty thousand, three hundred seventy-one".