21044023343 has 12 divisors (see below), whose sum is σ = 24210824400. Its totient is φ = 17918143200.

The previous prime is 21044023331. The next prime is 21044023369. The reversal of 21044023343 is 34332044012.

It is not a de Polignac number, because 21044023343 - 2⁴ = 21044023327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21044023303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93683 + ... + 225531.

It is an arithmetic number, because the mean of its divisors is an integer number (2017568700).

Almost surely, 2^21044023343 is an apocalyptic number.

21044023343 is a deficient number, since it is larger than the sum of its proper divisors (3166801057).

21044023343 is an equidigital number, since it uses as much as digits as its factorization.

21044023343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132158 (or 132007 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21044023343 its reverse (34332044012), we get a palindrome (55376067355).

The spelling of 21044023343 in words is "twenty-one billion, forty-four million, twenty-three thousand, three hundred forty-three".