33220132221 has 4 divisors (see below), whose sum is σ = 44293509632. Its totient is φ = 22146754812.

The previous prime is 33220132219. The next prime is 33220132241. The reversal of 33220132221 is 12223102233.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 33220132221 - 2¹ = 33220132219 is a prime.

It is a super-2 number, since 2×33220132221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220132241) 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 3 ways as a sum of consecutive naturals, for example, 5536688701 + ... + 5536688706.

It is an arithmetic number, because the mean of its divisors is an integer number (11073377408).

Almost surely, 2^33220132221 is an apocalyptic number.

It is an amenable number.

33220132221 is a deficient number, since it is larger than the sum of its proper divisors (11073377411).

33220132221 is a wasteful number, since it uses less digits than its factorization.

33220132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11073377410.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 33220132221 its reverse (12223102233), we get a palindrome (45443234454).

The spelling of 33220132221 in words is "thirty-three billion, two hundred twenty million, one hundred thirty-two thousand, two hundred twenty-one".