33223202221 has 32 divisors (see below), whose sum is σ = 39443231232. Its totient is φ = 27643100160.

The previous prime is 33223202203. The next prime is 33223202263. The reversal of 33223202221 is 12220232233.

It is a cyclic number.

It is not a de Polignac number, because 33223202221 - 2⁵ = 33223202189 is a prime.

It is a super-2 number, since 2×33223202221² (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 = 33223202192 and 33223202201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33223202291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1367835 + ... + 1391911.

It is an arithmetic number, because the mean of its divisors is an integer number (1232600976).

Almost surely, 2^33223202221 is an apocalyptic number.

It is an amenable number.

33223202221 is a deficient number, since it is larger than the sum of its proper divisors (6220029011).

33223202221 is a wasteful number, since it uses less digits than its factorization.

33223202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24309.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 33223202221 its reverse (12220232233), we get a palindrome (45443434454).

The spelling of 33223202221 in words is "thirty-three billion, two hundred twenty-three million, two hundred two thousand, two hundred twenty-one".