33101213 has 4 divisors (see below), whose sum is σ = 33422688. Its totient is φ = 32779740.

The previous prime is 33101179. The next prime is 33101219. The reversal of 33101213 is 31210133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31210133 = 103 ⋅303011.

It is a cyclic number.

It is not a de Polignac number, because 33101213 - 2¹⁸ = 32839069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33101219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160583 + ... + 160788.

It is an arithmetic number, because the mean of its divisors is an integer number (8355672).

Almost surely, 2^33101213 is an apocalyptic number.

It is an amenable number.

33101213 is a deficient number, since it is larger than the sum of its proper divisors (321475).

33101213 is a wasteful number, since it uses less digits than its factorization.

33101213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321474.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 33101213 is about 5753.3653629854. The cubic root of 33101213 is about 321.0810217222.

Adding to 33101213 its reverse (31210133), we get a palindrome (64311346).

The spelling of 33101213 in words is "thirty-three million, one hundred one thousand, two hundred thirteen".