33222131221 has 8 divisors (see below), whose sum is σ = 35186944320. Its totient is φ = 31258492608.

The previous prime is 33222131207. The next prime is 33222131287. The reversal of 33222131221 is 12213122233.

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

It is a cyclic number.

It is not a de Polignac number, because 33222131221 - 2¹⁹ = 33221606933 is a prime.

It is a super-2 number, since 2×33222131221² (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 = 33222131192 and 33222131201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33222131291) 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, 235041 + ... + 348838.

It is an arithmetic number, because the mean of its divisors is an integer number (4398368040).

Almost surely, 2^33222131221 is an apocalyptic number.

It is an amenable number.

33222131221 is a deficient number, since it is larger than the sum of its proper divisors (1964813099).

33222131221 is a wasteful number, since it uses less digits than its factorization.

33222131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587243.

The product of its digits is 864, while the sum is 22.

Adding to 33222131221 its reverse (12213122233), we get a palindrome (45435253454).

The spelling of 33222131221 in words is "thirty-three billion, two hundred twenty-two million, one hundred thirty-one thousand, two hundred twenty-one".