211012021711 has 2 divisors, whose sum is σ = 211012021712. Its totient is φ = 211012021710.

The previous prime is 211012021697. The next prime is 211012021729. The reversal of 211012021711 is 117120210112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211012021711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211012021771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105506010855 + 105506010856.

It is an arithmetic number, because the mean of its divisors is an integer number (105506010856).

Almost surely, 2^211012021711 is an apocalyptic number.

211012021711 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012021711 is an equidigital number, since it uses as much as digits as its factorization.

211012021711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 211012021711 its reverse (117120210112), we get a palindrome (328132231823).

The spelling of 211012021711 in words is "two hundred eleven billion, twelve million, twenty-one thousand, seven hundred eleven".