33304214221 has 16 divisors (see below), whose sum is σ = 34628746240. Its totient is φ = 31995699840.

The previous prime is 33304214197. The next prime is 33304214309. The reversal of 33304214221 is 12241240333.

It is a cyclic number.

It is not a de Polignac number, because 33304214221 - 2¹⁵ = 33304181453 is a prime.

It is a super-2 number, since 2×33304214221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33304214621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7040185 + ... + 7044913.

It is an arithmetic number, because the mean of its divisors is an integer number (2164296640).

Almost surely, 2^33304214221 is an apocalyptic number.

33304214221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33304214221 is a deficient number, since it is larger than the sum of its proper divisors (1324532019).

33304214221 is a wasteful number, since it uses less digits than its factorization.

33304214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 33304214221 its reverse (12241240333), we get a palindrome (45545454554).

The spelling of 33304214221 in words is "thirty-three billion, three hundred four million, two hundred fourteen thousand, two hundred twenty-one".