33442453221 has 8 divisors (see below), whose sum is σ = 44639103264. Its totient is φ = 22270386000.

The previous prime is 33442453211. The next prime is 33442453249. The reversal of 33442453221 is 12235424433.

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

It is not a de Polignac number, because 33442453221 - 2¹¹ = 33442451173 is a prime.

It is a super-2 number, since 2×33442453221² (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 (33442453211) 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, 6142530 + ... + 6147971.

It is an arithmetic number, because the mean of its divisors is an integer number (5579887908).

Almost surely, 2^33442453221 is an apocalyptic number.

It is an amenable number.

33442453221 is a deficient number, since it is larger than the sum of its proper divisors (11196650043).

33442453221 is a wasteful number, since it uses less digits than its factorization.

33442453221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12291411.

The product of its digits is 69120, while the sum is 33.

Adding to 33442453221 its reverse (12235424433), we get a palindrome (45677877654).

The spelling of 33442453221 in words is "thirty-three billion, four hundred forty-two million, four hundred fifty-three thousand, two hundred twenty-one".