212440311311 has 2 divisors, whose sum is σ = 212440311312. Its totient is φ = 212440311310.

The previous prime is 212440311299. The next prime is 212440311353. The reversal of 212440311311 is 113113044212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212440311311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212440314311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106220155655 + 106220155656.

It is an arithmetic number, because the mean of its divisors is an integer number (106220155656).

Almost surely, 2^212440311311 is an apocalyptic number.

212440311311 is a deficient number, since it is larger than the sum of its proper divisors (1).

212440311311 is an equidigital number, since it uses as much as digits as its factorization.

212440311311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 212440311311 its reverse (113113044212), we get a palindrome (325553355523).

The spelling of 212440311311 in words is "two hundred twelve billion, four hundred forty million, three hundred eleven thousand, three hundred eleven".