213312221033 has 4 divisors (see below), whose sum is σ = 213544335360. Its totient is φ = 213080106708.

The previous prime is 213312220999. The next prime is 213312221093. The reversal of 213312221033 is 330122213312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213312221033 - 2⁶ = 213312220969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213312221093) 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, 116055785 + ... + 116057622.

It is an arithmetic number, because the mean of its divisors is an integer number (53386083840).

Almost surely, 2^213312221033 is an apocalyptic number.

It is an amenable number.

213312221033 is a deficient number, since it is larger than the sum of its proper divisors (232114327).

213312221033 is an equidigital number, since it uses as much as digits as its factorization.

213312221033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232114326.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213312221033 its reverse (330122213312), we get a palindrome (543434434345).

The spelling of 213312221033 in words is "two hundred thirteen billion, three hundred twelve million, two hundred twenty-one thousand, thirty-three".