21120000303 has 32 divisors (see below), whose sum is σ = 31053818880. Its totient is φ = 12711928320.

The previous prime is 21120000299. The next prime is 21120000311. The reversal of 21120000303 is 30300002112.

It is a happy number.

It is not a de Polignac number, because 21120000303 - 2² = 21120000299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120000353) 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 31 ways as a sum of consecutive naturals, for example, 55158 + ... + 212796.

It is an arithmetic number, because the mean of its divisors is an integer number (970431840).

Almost surely, 2^21120000303 is an apocalyptic number.

21120000303 is a deficient number, since it is larger than the sum of its proper divisors (9933818577).

21120000303 is a wasteful number, since it uses less digits than its factorization.

21120000303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157767.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 21120000303 its reverse (30300002112), we get a palindrome (51420002415).

The spelling of 21120000303 in words is "twenty-one billion, one hundred twenty million, three hundred three", and thus it is an aban number.