33212516 has 12 divisors (see below), whose sum is σ = 59107440. Its totient is φ = 16324680.

The previous prime is 33212507. The next prime is 33212527. The reversal of 33212516 is 61521233.

It is a super-2 number, since 2×33212516² = 2206142438100512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33212491 and 33212500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70130 + ... + 70601.

It is an arithmetic number, because the mean of its divisors is an integer number (4925620).

Almost surely, 2^33212516 is an apocalyptic number.

It is an amenable number.

33212516 is a deficient number, since it is larger than the sum of its proper divisors (25894924).

33212516 is a wasteful number, since it uses less digits than its factorization.

33212516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140794 (or 140792 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 33212516 is about 5763.0301057690. The cubic root of 33212516 is about 321.4404979749.

Adding to 33212516 its reverse (61521233), we get a palindrome (94733749).

The spelling of 33212516 in words is "thirty-three million, two hundred twelve thousand, five hundred sixteen".