11331453221 has 8 divisors (see below), whose sum is σ = 12365913600. Its totient is φ = 10297714240.

The previous prime is 11331453151. The next prime is 11331453223. The reversal of 11331453221 is 12235413311.

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

It is not a de Polignac number, because 11331453221 - 2¹⁸ = 11331191077 is a prime.

It is a super-2 number, since 2×11331453221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331453223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147236 + ... + 210573.

It is an arithmetic number, because the mean of its divisors is an integer number (1545739200).

Almost surely, 2^11331453221 is an apocalyptic number.

11331453221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11331453221 is a deficient number, since it is larger than the sum of its proper divisors (1034460379).

11331453221 is a wasteful number, since it uses less digits than its factorization.

11331453221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360699.

The product of its digits is 2160, while the sum is 26.

Adding to 11331453221 its reverse (12235413311), we get a palindrome (23566866532).

The spelling of 11331453221 in words is "eleven billion, three hundred thirty-one million, four hundred fifty-three thousand, two hundred twenty-one".