21120330003 has 4 divisors (see below), whose sum is σ = 28160440008. Its totient is φ = 14080220000.

The previous prime is 21120329999. The next prime is 21120330043. The reversal of 21120330003 is 30003302112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21120330003 - 2² = 21120329999 is a prime.

It is a super-3 number, since 3×21120330003³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21120330043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3520054998 + ... + 3520055003.

It is an arithmetic number, because the mean of its divisors is an integer number (7040110002).

Almost surely, 2^21120330003 is an apocalyptic number.

21120330003 is a deficient number, since it is larger than the sum of its proper divisors (7040110005).

21120330003 is an equidigital number, since it uses as much as digits as its factorization.

21120330003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040110004.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21120330003 its reverse (30003302112), we get a palindrome (51123632115).

The spelling of 21120330003 in words is "twenty-one billion, one hundred twenty million, three hundred thirty thousand, three".