33221233231 has 4 divisors (see below), whose sum is σ = 33326032392. Its totient is φ = 33116434072.

The previous prime is 33221233211. The next prime is 33221233271. The reversal of 33221233231 is 13233212233.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33221233231 - 2³¹ = 31073749583 is a prime.

It is a super-2 number, since 2×33221233231² (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 = 33221233196 and 33221233205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221233211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52399105 + ... + 52399738.

It is an arithmetic number, because the mean of its divisors is an integer number (8331508098).

Almost surely, 2^33221233231 is an apocalyptic number.

33221233231 is a deficient number, since it is larger than the sum of its proper divisors (104799161).

33221233231 is a wasteful number, since it uses less digits than its factorization.

33221233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104799160.

The product of its digits is 3888, while the sum is 25.

Adding to 33221233231 its reverse (13233212233), we get a palindrome (46454445464).

The spelling of 33221233231 in words is "thirty-three billion, two hundred twenty-one million, two hundred thirty-three thousand, two hundred thirty-one".