33331221209 has 24 divisors (see below), whose sum is σ = 39403706400. Its totient is φ = 27948810240.

The previous prime is 33331221169. The next prime is 33331221223. The reversal of 33331221209 is 90212213333.

It is not a de Polignac number, because 33331221209 - 2¹² = 33331217113 is a prime.

It is a super-2 number, since 2×33331221209² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33331221269) 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 in 23 ways as a sum of consecutive naturals, for example, 2706137 + ... + 2718425.

It is an arithmetic number, because the mean of its divisors is an integer number (1641821100).

Almost surely, 2^33331221209 is an apocalyptic number.

It is an amenable number.

33331221209 is a deficient number, since it is larger than the sum of its proper divisors (6072485191).

33331221209 is a wasteful number, since it uses less digits than its factorization.

33331221209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13785 (or 13772 counting only the distinct ones).

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

The spelling of 33331221209 in words is "thirty-three billion, three hundred thirty-one million, two hundred twenty-one thousand, two hundred nine".