213111303123211 has 2 divisors, whose sum is σ = 213111303123212. Its totient is φ = 213111303123210.

The previous prime is 213111303123197. The next prime is 213111303123241. The reversal of 213111303123211 is 112321303111312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213111303123211 - 2⁵ = 213111303123179 is a prime.

It is not a weakly prime, because it can be changed into another prime (213111303123241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555651561605 + 106555651561606.

It is an arithmetic number, because the mean of its divisors is an integer number (106555651561606).

Almost surely, 2^{213111303123211} is an apocalyptic number.

213111303123211 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111303123211 is an equidigital number, since it uses as much as digits as its factorization.

213111303123211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 213111303123211 its reverse (112321303111312), we get a palindrome (325432606234523).

The spelling of 213111303123211 in words is "two hundred thirteen trillion, one hundred eleven billion, three hundred three million, one hundred twenty-three thousand, two hundred eleven".