213213023211 has 4 divisors (see below), whose sum is σ = 284284030952. Its totient is φ = 142142015472.

The previous prime is 213213023201. The next prime is 213213023251. The reversal of 213213023211 is 112320312312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213213023211 - 2¹¹ = 213213021163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213213023201) 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, 35535503866 + ... + 35535503871.

It is an arithmetic number, because the mean of its divisors is an integer number (71071007738).

Almost surely, 2^213213023211 is an apocalyptic number.

213213023211 is a deficient number, since it is larger than the sum of its proper divisors (71071007741).

213213023211 is an equidigital number, since it uses as much as digits as its factorization.

213213023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71071007740.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213213023211 its reverse (112320312312), we get a palindrome (325533335523).

The spelling of 213213023211 in words is "two hundred thirteen billion, two hundred thirteen million, twenty-three thousand, two hundred eleven".