21333240003 has 8 divisors (see below), whose sum is σ = 28552474368. Its totient is φ = 14168082824.

The previous prime is 21333239971. The next prime is 21333240011. The reversal of 21333240003 is 30004233312.

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 21333240003 - 2⁵ = 21333239971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21333240703) 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, 13518375 + ... + 13519952.

It is an arithmetic number, because the mean of its divisors is an integer number (3569059296).

Almost surely, 2^21333240003 is an apocalyptic number.

21333240003 is a deficient number, since it is larger than the sum of its proper divisors (7219234365).

21333240003 is a wasteful number, since it uses less digits than its factorization.

21333240003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27038593.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21333240003 its reverse (30004233312), we get a palindrome (51337473315).

The spelling of 21333240003 in words is "twenty-one billion, three hundred thirty-three million, two hundred forty thousand, three".