21033103003 has 8 divisors (see below), whose sum is σ = 22947230016. Its totient is φ = 19119313800.

The previous prime is 21033102971. The next prime is 21033103061. The reversal of 21033103003 is 30030133012.

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 21033103003 - 2⁵ = 21033102971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21033103073) 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, 55888 + ... + 212578.

It is an arithmetic number, because the mean of its divisors is an integer number (2868403752).

Almost surely, 2^21033103003 is an apocalyptic number.

21033103003 is a deficient number, since it is larger than the sum of its proper divisors (1914127013).

21033103003 is a wasteful number, since it uses less digits than its factorization.

21033103003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168905.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 21033103003 its reverse (30030133012), we get a palindrome (51063236015).

The spelling of 21033103003 in words is "twenty-one billion, thirty-three million, one hundred three thousand, three".