2113201191 has 4 divisors (see below), whose sum is σ = 2817601592. Its totient is φ = 1408800792.

The previous prime is 2113201157. The next prime is 2113201193. The reversal of 2113201191 is 1911023112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2113201191 - 2¹⁵ = 2113168423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113201193) 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 in 3 ways as a sum of consecutive naturals, for example, 352200196 + ... + 352200201.

It is an arithmetic number, because the mean of its divisors is an integer number (704400398).

Almost surely, 2^2113201191 is an apocalyptic number.

2113201191 is a deficient number, since it is larger than the sum of its proper divisors (704400401).

2113201191 is an equidigital number, since it uses as much as digits as its factorization.

2113201191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704400400.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 2113201191 is about 45969.5680967311. The cubic root of 2113201191 is about 1283.2569220973.

The spelling of 2113201191 in words is "two billion, one hundred thirteen million, two hundred one thousand, one hundred ninety-one".