21243033301 has 8 divisors (see below), whose sum is σ = 24304177280. Its totient is φ = 18188495568.

The previous prime is 21243033293. The next prime is 21243033307. The reversal of 21243033301 is 10333034212.

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 21243033301 - 2³ = 21243033293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243033307) 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, 1644666 + ... + 1657531.

It is an arithmetic number, because the mean of its divisors is an integer number (3038022160).

Almost surely, 2^21243033301 is an apocalyptic number.

It is an amenable number.

21243033301 is a deficient number, since it is larger than the sum of its proper divisors (3061143979).

21243033301 is an equidigital number, since it uses as much as digits as its factorization.

21243033301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303123.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21243033301 its reverse (10333034212), we get a palindrome (31576067513).

The spelling of 21243033301 in words is "twenty-one billion, two hundred forty-three million, thirty-three thousand, three hundred one".