2109195021199 has 6 divisors (see below), whose sum is σ = 2453553392064. Its totient is φ = 1807881446700.

The previous prime is 2109195021163. The next prime is 2109195021203. The reversal of 2109195021199 is 9911205919012.

It is not a de Polignac number, because 2109195021199 - 2¹⁹ = 2109194496911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 43044796351 = 2109195021199 / (2 + 1 + 0 + 9 + 1 + 9 + 5 + 0 + 2 + 1 + 1 + 9 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109195021799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21522398127 + ... + 21522398224.

It is an arithmetic number, because the mean of its divisors is an integer number (408925565344).

Almost surely, 2^{2109195021199} is an apocalyptic number.

2109195021199 is a deficient number, since it is larger than the sum of its proper divisors (344358370865).

2109195021199 is an equidigital number, since it uses as much as digits as its factorization.

2109195021199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43044796365 (or 43044796358 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 49.

The spelling of 2109195021199 in words is "two trillion, one hundred nine billion, one hundred ninety-five million, twenty-one thousand, one hundred ninety-nine".