33213316 has 12 divisors (see below), whose sum is σ = 58219840. Its totient is φ = 16579080.

The previous prime is 33213289. The next prime is 33213317. The reversal of 33213316 is 61331233.

It is a super-2 number, since 2×33213316² = 2206248719431712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33213317) 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, 4056 + ... + 9103.

Almost surely, 2^33213316 is an apocalyptic number.

It is an amenable number.

33213316 is a deficient number, since it is larger than the sum of its proper divisors (25006524).

33213316 is a wasteful number, since it uses less digits than its factorization.

33213316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13794 (or 13792 counting only the distinct ones).

The product of its digits is 972, while the sum is 22.

The square root of 33213316 is about 5763.0995132828. The cubic root of 33213316 is about 321.4430788326.

Adding to 33213316 its reverse (61331233), we get a palindrome (94544549).

The spelling of 33213316 in words is "thirty-three million, two hundred thirteen thousand, three hundred sixteen".