211320113111 has 2 divisors, whose sum is σ = 211320113112. Its totient is φ = 211320113110.

The previous prime is 211320113083. The next prime is 211320113117. The reversal of 211320113111 is 111311023112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211320113111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211320113111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211320113117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660056555 + 105660056556.

It is an arithmetic number, because the mean of its divisors is an integer number (105660056556).

Almost surely, 2^211320113111 is an apocalyptic number.

211320113111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211320113111 is an equidigital number, since it uses as much as digits as its factorization.

211320113111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 211320113111 its reverse (111311023112), we get a palindrome (322631136223).

The spelling of 211320113111 in words is "two hundred eleven billion, three hundred twenty million, one hundred thirteen thousand, one hundred eleven".