2101013191 has 2 divisors, whose sum is σ = 2101013192. Its totient is φ = 2101013190.

The previous prime is 2101013147. The next prime is 2101013203. The reversal of 2101013191 is 1913101012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101013191 - 2⁷ = 2101013063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101013491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050506595 + 1050506596.

It is an arithmetic number, because the mean of its divisors is an integer number (1050506596).

Almost surely, 2^2101013191 is an apocalyptic number.

2101013191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101013191 is an equidigital number, since it uses as much as digits as its factorization.

2101013191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 2101013191 is about 45836.8104365912. The cubic root of 2101013191 is about 1280.7850796980.

The spelling of 2101013191 in words is "two billion, one hundred one million, thirteen thousand, one hundred ninety-one".