33212401 has 2 divisors, whose sum is σ = 33212402. Its totient is φ = 33212400.

The previous prime is 33212393. The next prime is 33212449. The reversal of 33212401 is 10421233.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24206400 + 9006001 = 4920^2 + 3001^2 .

It is an emirp because it is prime and its reverse (10421233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33212401 - 2³ = 33212393 is a prime.

It is a super-2 number, since 2×33212401² = 2206127160369602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33212471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16606200 + 16606201.

It is an arithmetic number, because the mean of its divisors is an integer number (16606201).

Almost surely, 2^33212401 is an apocalyptic number.

It is an amenable number.

33212401 is a deficient number, since it is larger than the sum of its proper divisors (1).

33212401 is an equidigital number, since it uses as much as digits as its factorization.

33212401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 33212401 is about 5763.0201283702. The cubic root of 33212401 is about 321.4401269732.

Adding to 33212401 its reverse (10421233), we get a palindrome (43633634).

The spelling of 33212401 in words is "thirty-three million, two hundred twelve thousand, four hundred one".