213111011291 has 2 divisors, whose sum is σ = 213111011292. Its totient is φ = 213111011290.

The previous prime is 213111011279. The next prime is 213111011359. The reversal of 213111011291 is 192110111312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213111011291 - 2³⁰ = 212037269467 is a prime.

It is not a weakly prime, because it can be changed into another prime (213111011231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555505645 + 106555505646.

It is an arithmetic number, because the mean of its divisors is an integer number (106555505646).

Almost surely, 2^213111011291 is an apocalyptic number.

213111011291 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111011291 is an equidigital number, since it uses as much as digits as its factorization.

213111011291 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 23.

The spelling of 213111011291 in words is "two hundred thirteen billion, one hundred eleven million, eleven thousand, two hundred ninety-one".