2120172199 has 2 divisors, whose sum is σ = 2120172200. Its totient is φ = 2120172198.

The previous prime is 2120172179. The next prime is 2120172203. The reversal of 2120172199 is 9912710212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120172199 - 2⁵ = 2120172167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120172149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060086099 + 1060086100.

It is an arithmetic number, because the mean of its divisors is an integer number (1060086100).

Almost surely, 2^2120172199 is an apocalyptic number.

2120172199 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120172199 is an equidigital number, since it uses as much as digits as its factorization.

2120172199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 2120172199 is about 46045.3276565603. The cubic root of 2120172199 is about 1284.6664385769. Note that the first 3 decimals are identical.

The spelling of 2120172199 in words is "two billion, one hundred twenty million, one hundred seventy-two thousand, one hundred ninety-nine".