2921113191091 has 2 divisors, whose sum is σ = 2921113191092. Its totient is φ = 2921113191090.

The previous prime is 2921113191047. The next prime is 2921113191103. The reversal of 2921113191091 is 1901913111292.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2921113191091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2921113791091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460556595545 + 1460556595546.

It is an arithmetic number, because the mean of its divisors is an integer number (1460556595546).

Almost surely, 2^{2921113191091} is an apocalyptic number.

2921113191091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2921113191091 is an equidigital number, since it uses as much as digits as its factorization.

2921113191091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 40.

The spelling of 2921113191091 in words is "two trillion, nine hundred twenty-one billion, one hundred thirteen million, one hundred ninety-one thousand, ninety-one".