21444102030343 has 4 divisors (see below), whose sum is σ = 21444152586120. Its totient is φ = 21444051474568.

The previous prime is 21444102030293. The next prime is 21444102030361. The reversal of 21444102030343 is 34303020144412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21444102030343 - 2¹⁷ = 21444101899271 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 (21444102030383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24636208 + ... + 25491781.

It is an arithmetic number, because the mean of its divisors is an integer number (5361038146530).

Almost surely, 2^{21444102030343} is an apocalyptic number.

21444102030343 is a deficient number, since it is larger than the sum of its proper divisors (50555777).

21444102030343 is an equidigital number, since it uses as much as digits as its factorization.

21444102030343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50555776.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 21444102030343 its reverse (34303020144412), we get a palindrome (55747122174755).

The spelling of 21444102030343 in words is "twenty-one trillion, four hundred forty-four billion, one hundred two million, thirty thousand, three hundred forty-three".