211865892311 has 2 divisors, whose sum is σ = 211865892312. Its totient is φ = 211865892310.

The previous prime is 211865892263. The next prime is 211865892373. The reversal of 211865892311 is 113298568112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211865892311 - 2⁶ = 211865892247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211865892011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105932946155 + 105932946156.

It is an arithmetic number, because the mean of its divisors is an integer number (105932946156).

Almost surely, 2^211865892311 is an apocalyptic number.

211865892311 is a deficient number, since it is larger than the sum of its proper divisors (1).

211865892311 is an equidigital number, since it uses as much as digits as its factorization.

211865892311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 47.

The spelling of 211865892311 in words is "two hundred eleven billion, eight hundred sixty-five million, eight hundred ninety-two thousand, three hundred eleven".