21211130203 has 8 divisors (see below), whose sum is σ = 21321331200. Its totient is φ = 21101215488.

The previous prime is 21211130191. The next prime is 21211130233. The reversal of 21211130203 is 30203111212.

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 21211130203 - 2¹³ = 21211122011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211130233) 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, 77803 + ... + 220171.

It is an arithmetic number, because the mean of its divisors is an integer number (2665166400).

Almost surely, 2^21211130203 is an apocalyptic number.

21211130203 is a deficient number, since it is larger than the sum of its proper divisors (110200997).

21211130203 is a wasteful number, since it uses less digits than its factorization.

21211130203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143141.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21211130203 its reverse (30203111212), we get a palindrome (51414241415).

The spelling of 21211130203 in words is "twenty-one billion, two hundred eleven million, one hundred thirty thousand, two hundred three".