21223341443 has 8 divisors (see below), whose sum is σ = 21335503200. Its totient is φ = 21111235200.

The previous prime is 21223341431. The next prime is 21223341509. The reversal of 21223341443 is 34414332212.

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

It is a cyclic number.

It is not a de Polignac number, because 21223341443 - 2¹⁶ = 21223275907 is a prime.

It is a super-2 number, since 2×21223341443² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223341413) 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, 915293 + ... + 938193.

It is an arithmetic number, because the mean of its divisors is an integer number (2666937900).

Almost surely, 2^21223341443 is an apocalyptic number.

21223341443 is a deficient number, since it is larger than the sum of its proper divisors (112161757).

21223341443 is a wasteful number, since it uses less digits than its factorization.

21223341443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27757.

The product of its digits is 13824, while the sum is 29.

Adding to 21223341443 its reverse (34414332212), we get a palindrome (55637673655).

The spelling of 21223341443 in words is "twenty-one billion, two hundred twenty-three million, three hundred forty-one thousand, four hundred forty-three".