33212066 has 4 divisors (see below), whose sum is σ = 49818102. Its totient is φ = 16606032.

The previous prime is 33212029. The next prime is 33212071. The reversal of 33212066 is 66021233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66021233 = 7963 ⋅8291.

It can be written as a sum of positive squares in only one way, i.e., 32821441 + 390625 = 5729^2 + 625^2 .

It is a super-2 number, since 2×33212066² = 2206082655976712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8303015 + ... + 8303018.

Almost surely, 2^33212066 is an apocalyptic number.

33212066 is a deficient number, since it is larger than the sum of its proper divisors (16606036).

33212066 is a wasteful number, since it uses less digits than its factorization.

33212066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16606035.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 33212066 is about 5762.9910636752. The cubic root of 33212066 is about 321.4390462242.

Adding to 33212066 its reverse (66021233), we get a palindrome (99233299).

The spelling of 33212066 in words is "thirty-three million, two hundred twelve thousand, sixty-six".