33221233 has 4 divisors (see below), whose sum is σ = 33248880. Its totient is φ = 33193588.

The previous prime is 33221197. The next prime is 33221249. The reversal of 33221233 is 33212233.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-33221233 is a prime.

It is a super-2 number, since 2×33221233² = 2207300644080578, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33221233.

It is not an unprimeable number, because it can be changed into a prime (33221263) 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, 11935 + ... + 14452.

It is an arithmetic number, because the mean of its divisors is an integer number (8312220).

Almost surely, 2^33221233 is an apocalyptic number.

It is an amenable number.

33221233 is a deficient number, since it is larger than the sum of its proper divisors (27647).

33221233 is a wasteful number, since it uses less digits than its factorization.

33221233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27646.

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

The square root of 33221233 is about 5763.7863423274. The cubic root of 33221233 is about 321.4686174115.

Adding to 33221233 its reverse (33212233), we get a palindrome (66433466).

The spelling of 33221233 in words is "thirty-three million, two hundred twenty-one thousand, two hundred thirty-three".