211021211039 has 2 divisors, whose sum is σ = 211021211040. Its totient is φ = 211021211038.

The previous prime is 211021210991. The next prime is 211021211041. The reversal of 211021211039 is 930112120112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211021211039 is a prime.

It is a Sophie Germain prime.

Together with 211021211041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211021211539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510605519 + 105510605520.

It is an arithmetic number, because the mean of its divisors is an integer number (105510605520).

Almost surely, 2^211021211039 is an apocalyptic number.

211021211039 is a deficient number, since it is larger than the sum of its proper divisors (1).

211021211039 is an equidigital number, since it uses as much as digits as its factorization.

211021211039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 211021211039 in words is "two hundred eleven billion, twenty-one million, two hundred eleven thousand, thirty-nine".