21232342243 has 48 divisors (see below), whose sum is σ = 27108069120. Its totient is φ = 16520946624.

The previous prime is 21232342211. The next prime is 21232342249. The reversal of 21232342243 is 34224323212.

It is not a de Polignac number, because 21232342243 - 2⁵ = 21232342211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21232342249) 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 47 ways as a sum of consecutive naturals, for example, 2116746 + ... + 2126752.

It is an arithmetic number, because the mean of its divisors is an integer number (564751440).

Almost surely, 2^21232342243 is an apocalyptic number.

21232342243 is a deficient number, since it is larger than the sum of its proper divisors (5875726877).

21232342243 is a wasteful number, since it uses less digits than its factorization.

21232342243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10136 (or 10129 counting only the distinct ones).

The product of its digits is 13824, while the sum is 28.

Adding to 21232342243 its reverse (34224323212), we get a palindrome (55456665455).

The spelling of 21232342243 in words is "twenty-one billion, two hundred thirty-two million, three hundred forty-two thousand, two hundred forty-three".