21103033303 has 8 divisors (see below), whose sum is σ = 23028508800. Its totient is φ = 19178727480.

The previous prime is 21103033277. The next prime is 21103033307. The reversal of 21103033303 is 30333030112.

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

It is not a de Polignac number, because 21103033303 - 2⁵ = 21103033271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103033307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254475 + ... + 327052.

It is an arithmetic number, because the mean of its divisors is an integer number (2878563600).

Almost surely, 2^21103033303 is an apocalyptic number.

21103033303 is a deficient number, since it is larger than the sum of its proper divisors (1925475497).

21103033303 is a wasteful number, since it uses less digits than its factorization.

21103033303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584837.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 21103033303 its reverse (30333030112), we get a palindrome (51436063415).

The spelling of 21103033303 in words is "twenty-one billion, one hundred three million, thirty-three thousand, three hundred three".