21233244304443 has 8 divisors (see below), whose sum is σ = 28602858307408. Its totient is φ = 14009563252224.

The previous prime is 21233244304387. The next prime is 21233244304451. The reversal of 21233244304443 is 34440344233212.

It is a happy number.

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

It is not a de Polignac number, because 21233244304443 - 2¹⁰ = 21233244303419 is a prime.

It is a super-2 number, since 2×21233244304443² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233244304483) 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, 36483237346 + ... + 36483237927.

It is an arithmetic number, because the mean of its divisors is an integer number (3575357288426).

Almost surely, 2^{21233244304443} is an apocalyptic number.

21233244304443 is a deficient number, since it is larger than the sum of its proper divisors (7369614002965).

21233244304443 is an equidigital number, since it uses as much as digits as its factorization.

21233244304443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72966475373.

The product of its (nonzero) digits is 663552, while the sum is 39.

Adding to 21233244304443 its reverse (34440344233212), we get a palindrome (55673588537655).

The spelling of 21233244304443 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred forty-four million, three hundred four thousand, four hundred forty-three".