33022021221 has 64 divisors (see below), whose sum is σ = 57925058560. Its totient is φ = 18194207040.

The previous prime is 33022021199. The next prime is 33022021231. The reversal of 33022021221 is 12212022033.

It is not a de Polignac number, because 33022021221 - 2⁶ = 33022021157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33022021194 and 33022021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33022021231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1612770 + ... + 1633116.

It is an arithmetic number, because the mean of its divisors is an integer number (905079040).

Almost surely, 2^33022021221 is an apocalyptic number.

33022021221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33022021221 is a deficient number, since it is larger than the sum of its proper divisors (24903037339).

33022021221 is a wasteful number, since it uses less digits than its factorization.

33022021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20671 (or 20665 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 33022021221 its reverse (12212022033), we get a palindrome (45234043254).

The spelling of 33022021221 in words is "thirty-three billion, twenty-two million, twenty-one thousand, two hundred twenty-one".