21523233341 has 8 divisors (see below), whose sum is σ = 21713935680. Its totient is φ = 21333018208.

The previous prime is 21523233313. The next prime is 21523233343. The reversal of 21523233341 is 14333232512.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21523233341 is a prime.

It is a super-2 number, since 2×21523233341² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21523233343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32771 + ... + 210048.

It is an arithmetic number, because the mean of its divisors is an integer number (2714241960).

Almost surely, 2^21523233341 is an apocalyptic number.

It is an amenable number.

21523233341 is a deficient number, since it is larger than the sum of its proper divisors (190702339).

21523233341 is a wasteful number, since it uses less digits than its factorization.

21523233341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243603.

The product of its digits is 12960, while the sum is 29.

Adding to 21523233341 its reverse (14333232512), we get a palindrome (35856465853).

The spelling of 21523233341 in words is "twenty-one billion, five hundred twenty-three million, two hundred thirty-three thousand, three hundred forty-one".