33205213 has 2 divisors, whose sum is σ = 33205214. Its totient is φ = 33205212.

The previous prime is 33205187. The next prime is 33205241. The reversal of 33205213 is 31250233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16867449 + 16337764 = 4107^2 + 4042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33205213 is a prime.

It is a super-2 number, since 2×33205213² = 2205172340750738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33205253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16602606 + 16602607.

It is an arithmetic number, because the mean of its divisors is an integer number (16602607).

Almost surely, 2^33205213 is an apocalyptic number.

It is an amenable number.

33205213 is a deficient number, since it is larger than the sum of its proper divisors (1).

33205213 is an equidigital number, since it uses as much as digits as its factorization.

33205213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 33205213 is about 5762.3964632781. The cubic root of 33205213 is about 321.4169360538.

Adding to 33205213 its reverse (31250233), we get a palindrome (64455446).

The spelling of 33205213 in words is "thirty-three million, two hundred five thousand, two hundred thirteen".