21314333444 has 12 divisors (see below), whose sum is σ = 37405751964. Its totient is φ = 10626975744.

The previous prime is 21314333441. The next prime is 21314333449. The reversal of 21314333444 is 44433341312.

It can be written as a sum of positive squares in 2 ways, for example, as 9463398400 + 11850935044 = 97280^2 + 108862^2 .

It is a super-2 number, since 2×21314333444² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21314333444.

It is not an unprimeable number, because it can be changed into a prime (21314333441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7546157 + ... + 7548980.

It is an arithmetic number, because the mean of its divisors is an integer number (3117145997).

Almost surely, 2^21314333444 is an apocalyptic number.

It is an amenable number.

21314333444 is a deficient number, since it is larger than the sum of its proper divisors (16091418520).

21314333444 is a wasteful number, since it uses less digits than its factorization.

21314333444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15095494 (or 15095492 counting only the distinct ones).

The product of its digits is 41472, while the sum is 32.

Adding to 21314333444 its reverse (44433341312), we get a palindrome (65747674756).

The spelling of 21314333444 in words is "twenty-one billion, three hundred fourteen million, three hundred thirty-three thousand, four hundred forty-four".