33213212309 has 8 divisors (see below), whose sum is σ = 34148849280. Its totient is φ = 32283554400.

The previous prime is 33213212287. The next prime is 33213212317. The reversal of 33213212309 is 90321231233.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33213212309 is a prime.

It is a super-2 number, since 2×33213212309² (a number of 22 digits) contains 22 as substring.

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 (33213212209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1483499 + ... + 1505720.

It is an arithmetic number, because the mean of its divisors is an integer number (4268606160).

Almost surely, 2^33213212309 is an apocalyptic number.

It is an amenable number.

33213212309 is a deficient number, since it is larger than the sum of its proper divisors (935636971).

33213212309 is a wasteful number, since it uses less digits than its factorization.

33213212309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989531.

The product of its (nonzero) digits is 5832, while the sum is 29.

The spelling of 33213212309 in words is "thirty-three billion, two hundred thirteen million, two hundred twelve thousand, three hundred nine".