33210431221 has 8 divisors (see below), whose sum is σ = 36289850688. Its totient is φ = 30141060000.

The previous prime is 33210431167. The next prime is 33210431297. The reversal of 33210431221 is 12213401233.

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

It is a cyclic number.

It is not a de Polignac number, because 33210431221 - 2¹¹ = 33210429173 is a prime.

It is a super-2 number, since 2×33210431221² (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 = 33210431192 and 33210431201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33210434221) 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, 2505145 + ... + 2518366.

It is an arithmetic number, because the mean of its divisors is an integer number (4536231336).

Almost surely, 2^33210431221 is an apocalyptic number.

It is an amenable number.

33210431221 is a deficient number, since it is larger than the sum of its proper divisors (3079419467).

33210431221 is a wasteful number, since it uses less digits than its factorization.

33210431221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024123.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 33210431221 its reverse (12213401233), we get a palindrome (45423832454).

The spelling of 33210431221 in words is "thirty-three billion, two hundred ten million, four hundred thirty-one thousand, two hundred twenty-one".