21232342244 has 6 divisors (see below), whose sum is σ = 37156598934. Its totient is φ = 10616171120.

The previous prime is 21232342211. The next prime is 21232342249. The reversal of 21232342244 is 44224323212.

It can be written as a sum of positive squares in only one way, i.e., 15298721344 + 5933620900 = 123688^2 + 77030^2 .

It is not an unprimeable number, because it can be changed into a prime (21232342249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2654042777 + ... + 2654042784.

It is an arithmetic number, because the mean of its divisors is an integer number (6192766489).

Almost surely, 2^21232342244 is an apocalyptic number.

It is an amenable number.

21232342244 is a deficient number, since it is larger than the sum of its proper divisors (15924256690).

21232342244 is a wasteful number, since it uses less digits than its factorization.

21232342244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5308085565 (or 5308085563 counting only the distinct ones).

The product of its digits is 18432, while the sum is 29.

Adding to 21232342244 its reverse (44224323212), we get a palindrome (65456665456).

The spelling of 21232342244 in words is "twenty-one billion, two hundred thirty-two million, three hundred forty-two thousand, two hundred forty-four".