213111313211 has 4 divisors (see below), whose sum is σ = 213112489392. Its totient is φ = 213110137032.

The previous prime is 213111313201. The next prime is 213111313231. The reversal of 213111313211 is 112313111312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213111313211 - 2³⁰ = 212037571387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213111313201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252455 + ... + 699968.

It is an arithmetic number, because the mean of its divisors is an integer number (53278122348).

Almost surely, 2^213111313211 is an apocalyptic number.

213111313211 is a deficient number, since it is larger than the sum of its proper divisors (1176181).

213111313211 is an equidigital number, since it uses as much as digits as its factorization.

213111313211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176180.

The product of its digits is 108, while the sum is 20.

Adding to 213111313211 its reverse (112313111312), we get a palindrome (325424424523).

The spelling of 213111313211 in words is "two hundred thirteen billion, one hundred eleven million, three hundred thirteen thousand, two hundred eleven".