33020011221 has 8 divisors (see below), whose sum is σ = 44318249664. Its totient is φ = 21867556800.

The previous prime is 33020011169. The next prime is 33020011223. The reversal of 33020011221 is 12211002033.

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

It is not a de Polignac number, because 33020011221 - 2²⁹ = 32483140309 is a prime.

It is a super-2 number, since 2×33020011221² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33020011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33020011223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36445476 + ... + 36446381.

It is an arithmetic number, because the mean of its divisors is an integer number (5539781208).

Almost surely, 2^33020011221 is an apocalyptic number.

It is an amenable number.

33020011221 is a deficient number, since it is larger than the sum of its proper divisors (11298238443).

33020011221 is a wasteful number, since it uses less digits than its factorization.

33020011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72892011.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 33020011221 its reverse (12211002033), we get a palindrome (45231013254).

The spelling of 33020011221 in words is "thirty-three billion, twenty million, eleven thousand, two hundred twenty-one".