21331114399 has 8 divisors (see below), whose sum is σ = 24439213728. Its totient is φ = 18238214400.

The previous prime is 21331114397. The next prime is 21331114451. The reversal of 21331114399 is 99341113312.

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

It is not a de Polignac number, because 21331114399 - 2¹ = 21331114397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331114397) 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, 3796822 + ... + 3802435.

It is an arithmetic number, because the mean of its divisors is an integer number (3054901716).

Almost surely, 2^21331114399 is an apocalyptic number.

21331114399 is a deficient number, since it is larger than the sum of its proper divisors (3108099329).

21331114399 is an equidigital number, since it uses as much as digits as its factorization.

21331114399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7599665.

The product of its digits is 17496, while the sum is 37.

The spelling of 21331114399 in words is "twenty-one billion, three hundred thirty-one million, one hundred fourteen thousand, three hundred ninety-nine".