21324222241 has 12 divisors (see below), whose sum is σ = 24885506880. Its totient is φ = 18219120360.

The previous prime is 21324222239. The next prime is 21324222263. The reversal of 21324222241 is 14222242312.

It is not a de Polignac number, because 21324222241 - 2¹ = 21324222239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21324222541) 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, 684421 + ... + 714898.

It is an arithmetic number, because the mean of its divisors is an integer number (2073792240).

Almost surely, 2^21324222241 is an apocalyptic number.

It is an amenable number.

21324222241 is a deficient number, since it is larger than the sum of its proper divisors (3561284639).

21324222241 is a wasteful number, since it uses less digits than its factorization.

21324222241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399644 (or 1399637 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

Adding to 21324222241 its reverse (14222242312), we get a palindrome (35546464553).

The spelling of 21324222241 in words is "twenty-one billion, three hundred twenty-four million, two hundred twenty-two thousand, two hundred forty-one".