211312232111 has 2 divisors, whose sum is σ = 211312232112. Its totient is φ = 211312232110.

The previous prime is 211312232101. The next prime is 211312232123. The reversal of 211312232111 is 111232213112.

211312232111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211312232111 - 2²⁶ = 211245123247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211312232101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105656116055 + 105656116056.

It is an arithmetic number, because the mean of its divisors is an integer number (105656116056).

Almost surely, 2^211312232111 is an apocalyptic number.

211312232111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211312232111 is an equidigital number, since it uses as much as digits as its factorization.

211312232111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

Adding to 211312232111 its reverse (111232213112), we get a palindrome (322544445223).

The spelling of 211312232111 in words is "two hundred eleven billion, three hundred twelve million, two hundred thirty-two thousand, one hundred eleven".