213322233 has 4 divisors (see below), whose sum is σ = 284429648. Its totient is φ = 142214820.

The previous prime is 213322223. The next prime is 213322247. The reversal of 213322233 is 332223312.

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 not a de Polignac number, because 213322233 - 2¹⁷ = 213191161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213322223) 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, 35553703 + ... + 35553708.

It is an arithmetic number, because the mean of its divisors is an integer number (71107412).

Almost surely, 2^213322233 is an apocalyptic number.

It is an amenable number.

213322233 is a deficient number, since it is larger than the sum of its proper divisors (71107415).

213322233 is an equidigital number, since it uses as much as digits as its factorization.

213322233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71107414.

The product of its digits is 1296, while the sum is 21.

The square root of 213322233 is about 14605.5548679261. The cubic root of 213322233 is about 597.5102691348.

Adding to 213322233 its reverse (332223312), we get a palindrome (545545545).

The spelling of 213322233 in words is "two hundred thirteen million, three hundred twenty-two thousand, two hundred thirty-three".