33223213 has 8 divisors (see below), whose sum is σ = 33833600. Its totient is φ = 32617728.

The previous prime is 33223207. The next prime is 33223217. The reversal of 33223213 is 31232233.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33223213 - 2⁹ = 33222701 is a prime.

It is a super-2 number, since 2×33223213² = 2207563764086738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33223217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14158 + ... + 16336.

It is an arithmetic number, because the mean of its divisors is an integer number (4229200).

Almost surely, 2^33223213 is an apocalyptic number.

It is an amenable number.

33223213 is a deficient number, since it is larger than the sum of its proper divisors (610387).

33223213 is a wasteful number, since it uses less digits than its factorization.

33223213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451.

The product of its digits is 648, while the sum is 19.

The square root of 33223213 is about 5763.9581018602. The cubic root of 33223213 is about 321.4750038413.

Adding to 33223213 its reverse (31232233), we get a palindrome (64455446).

The spelling of 33223213 in words is "thirty-three million, two hundred twenty-three thousand, two hundred thirteen".