33233020221 has 16 divisors (see below), whose sum is σ = 44502151680. Its totient is φ = 22059678000.

The previous prime is 33233020217. The next prime is 33233020243. The reversal of 33233020221 is 12202033233.

It is not a de Polignac number, because 33233020221 - 2² = 33233020217 is a prime.

It is a super-2 number, since 2×33233020221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33233020621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3111336 + ... + 3121998.

It is an arithmetic number, because the mean of its divisors is an integer number (2781384480).

Almost surely, 2^33233020221 is an apocalyptic number.

It is an amenable number.

33233020221 is a deficient number, since it is larger than the sum of its proper divisors (11269131459).

33233020221 is a wasteful number, since it uses less digits than its factorization.

33233020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15056.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 33233020221 its reverse (12202033233), we get a palindrome (45435053454).

The spelling of 33233020221 in words is "thirty-three billion, two hundred thirty-three million, twenty thousand, two hundred twenty-one".