33212189 has 2 divisors, whose sum is σ = 33212190. Its totient is φ = 33212188.

The previous prime is 33212147. The next prime is 33212261. The reversal of 33212189 is 98121233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22486564 + 10725625 = 4742^2 + 3275^2 .

It is a cyclic number.

It is not a de Polignac number, because 33212189 - 2¹⁶ = 33146653 is a prime.

It is a super-2 number, since 2×33212189² = 2206098996343442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33212119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16606094 + 16606095.

It is an arithmetic number, because the mean of its divisors is an integer number (16606095).

Almost surely, 2^33212189 is an apocalyptic number.

It is an amenable number.

33212189 is a deficient number, since it is larger than the sum of its proper divisors (1).

33212189 is an equidigital number, since it uses as much as digits as its factorization.

33212189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 33212189 is about 5763.0017352071. The cubic root of 33212189 is about 321.4394430373.

It can be divided in two parts, 332 and 12189, that added together give a palindrome (12521).

The spelling of 33212189 in words is "thirty-three million, two hundred twelve thousand, one hundred eighty-nine".