2113210091 has 2 divisors, whose sum is σ = 2113210092. Its totient is φ = 2113210090.

The previous prime is 2113210063. The next prime is 2113210171. The reversal of 2113210091 is 1900123112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2113210091 - 2⁶ = 2113210027 is a prime.

It is a super-3 number, since 3×2113210091³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2113210291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056605045 + 1056605046.

It is an arithmetic number, because the mean of its divisors is an integer number (1056605046).

Almost surely, 2^2113210091 is an apocalyptic number.

2113210091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113210091 is an equidigital number, since it uses as much as digits as its factorization.

2113210091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 2113210091 is about 45969.6648998010. The cubic root of 2113210091 is about 1283.2587236248.

The spelling of 2113210091 in words is "two billion, one hundred thirteen million, two hundred ten thousand, ninety-one".