213210221311 has 2 divisors, whose sum is σ = 213210221312. Its totient is φ = 213210221310.

The previous prime is 213210221309. The next prime is 213210221327. The reversal of 213210221311 is 113122012312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213210221311 - 2¹ = 213210221309 is a prime.

Together with 213210221309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213210221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106605110655 + 106605110656.

It is an arithmetic number, because the mean of its divisors is an integer number (106605110656).

Almost surely, 2^213210221311 is an apocalyptic number.

213210221311 is a deficient number, since it is larger than the sum of its proper divisors (1).

213210221311 is an equidigital number, since it uses as much as digits as its factorization.

213210221311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 213210221311 its reverse (113122012312), we get a palindrome (326332233623).

The spelling of 213210221311 in words is "two hundred thirteen billion, two hundred ten million, two hundred twenty-one thousand, three hundred eleven".