33221223231 has 8 divisors (see below), whose sum is σ = 50622816384. Its totient is φ = 18983556120.

The previous prime is 33221223197. The next prime is 33221223257. The reversal of 33221223231 is 13232212233.

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

It is not a de Polignac number, because 33221223231 - 2¹⁵ = 33221190463 is a prime.

It is a super-2 number, since 2×33221223231² (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 (33221223131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790981485 + ... + 790981526.

It is an arithmetic number, because the mean of its divisors is an integer number (6327852048).

Almost surely, 2^33221223231 is an apocalyptic number.

33221223231 is a deficient number, since it is larger than the sum of its proper divisors (17401593153).

33221223231 is a wasteful number, since it uses less digits than its factorization.

33221223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581963021.

The product of its digits is 2592, while the sum is 24.

Adding to 33221223231 its reverse (13232212233), we get a palindrome (46453435464).

The spelling of 33221223231 in words is "thirty-three billion, two hundred twenty-one million, two hundred twenty-three thousand, two hundred thirty-one".