21322221112331 has 8 divisors (see below), whose sum is σ = 21373766570160. Its totient is φ = 21270713518432.

The previous prime is 21322221112289. The next prime is 21322221112373. The reversal of 21322221112331 is 13321112222312.

It is an interprime number because it is at equal distance from previous prime (21322221112289) and next prime (21322221112373).

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 21322221112331 - 2³⁰ = 21321147370507 is a prime.

It is a super-2 number, since 2×21322221112331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21322221112331.

It is not an unprimeable number, because it can be changed into a prime (21322221112391) 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, 8338205 + ... + 10591038.

It is an arithmetic number, because the mean of its divisors is an integer number (2671720821270).

Almost surely, 2^{21322221112331} is an apocalyptic number.

21322221112331 is a deficient number, since it is larger than the sum of its proper divisors (51545457829).

21322221112331 is a wasteful number, since it uses less digits than its factorization.

21322221112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18931965.

The product of its digits is 1728, while the sum is 26.

Adding to 21322221112331 its reverse (13321112222312), we get a palindrome (34643333334643).

The spelling of 21322221112331 in words is "twenty-one trillion, three hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, three hundred thirty-one".