21010330203 has 8 divisors (see below), whose sum is σ = 28134005328. Its totient is φ = 13946770944.

The previous prime is 21010330189. The next prime is 21010330261. The reversal of 21010330203 is 30203301012.

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

It is not a de Polignac number, because 21010330203 - 2¹⁸ = 21010068059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21010330603) 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, 15028150 + ... + 15029547.

It is an arithmetic number, because the mean of its divisors is an integer number (3516750666).

Almost surely, 2^21010330203 is an apocalyptic number.

21010330203 is a deficient number, since it is larger than the sum of its proper divisors (7123675125).

21010330203 is a wasteful number, since it uses less digits than its factorization.

21010330203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30057933.

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

Adding to 21010330203 its reverse (30203301012), we get a palindrome (51213631215).

The spelling of 21010330203 in words is "twenty-one billion, ten million, three hundred thirty thousand, two hundred three".