33021013232221 has 12 divisors (see below), whose sum is σ = 38416615264800. Its totient is φ = 28300471586520.

The previous prime is 33021013232209. The next prime is 33021013232231. The reversal of 33021013232221 is 12223231012033.

It is not a de Polignac number, because 33021013232221 - 2¹³ = 33021013224029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021013232231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38307985 + ... + 39160486.

It is an arithmetic number, because the mean of its divisors is an integer number (3201384605400).

Almost surely, 2^{33021013232221} is an apocalyptic number.

It is an amenable number.

33021013232221 is a deficient number, since it is larger than the sum of its proper divisors (5395602032579).

33021013232221 is an equidigital number, since it uses as much as digits as its factorization.

33021013232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77477184 (or 77477177 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 33021013232221 its reverse (12223231012033), we get a palindrome (45244244244254).

The spelling of 33021013232221 in words is "thirty-three trillion, twenty-one billion, thirteen million, two hundred thirty-two thousand, two hundred twenty-one".