33210321221 has 8 divisors (see below), whose sum is σ = 41405075904. Its totient is φ = 25878172320.

The previous prime is 33210321197. The next prime is 33210321223. The reversal of 33210321221 is 12212301233.

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

It is not a de Polignac number, because 33210321221 - 2¹⁴ = 33210304837 is a prime.

It is a super-2 number, since 2×33210321221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33210321193 and 33210321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33210321223) 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, 215651360 + ... + 215651513.

It is an arithmetic number, because the mean of its divisors is an integer number (5175634488).

Almost surely, 2^33210321221 is an apocalyptic number.

It is an amenable number.

33210321221 is a deficient number, since it is larger than the sum of its proper divisors (8194754683).

33210321221 is a wasteful number, since it uses less digits than its factorization.

33210321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431302891.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 33210321221 its reverse (12212301233), we get a palindrome (45422622454).

The spelling of 33210321221 in words is "thirty-three billion, two hundred ten million, three hundred twenty-one thousand, two hundred twenty-one".