211397847611 has 2 divisors, whose sum is σ = 211397847612. Its totient is φ = 211397847610.

The previous prime is 211397847607. The next prime is 211397847613. The reversal of 211397847611 is 116748793112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211397847611 - 2² = 211397847607 is a prime.

Together with 211397847613, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211397847611.

It is not a weakly prime, because it can be changed into another prime (211397847613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105698923805 + 105698923806.

It is an arithmetic number, because the mean of its divisors is an integer number (105698923806).

Almost surely, 2^211397847611 is an apocalyptic number.

211397847611 is a deficient number, since it is larger than the sum of its proper divisors (1).

211397847611 is an equidigital number, since it uses as much as digits as its factorization.

211397847611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 50.

The spelling of 211397847611 in words is "two hundred eleven billion, three hundred ninety-seven million, eight hundred forty-seven thousand, six hundred eleven".