21130202203 has 16 divisors (see below), whose sum is σ = 23138012160. Its totient is φ = 19137016800.

The previous prime is 21130202201. The next prime is 21130202231. The reversal of 21130202203 is 30220203112.

It is not a de Polignac number, because 21130202203 - 2¹ = 21130202201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130202201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3479776 + ... + 3485842.

It is an arithmetic number, because the mean of its divisors is an integer number (1446125760).

Almost surely, 2^21130202203 is an apocalyptic number.

21130202203 is a deficient number, since it is larger than the sum of its proper divisors (2007809957).

21130202203 is a wasteful number, since it uses less digits than its factorization.

21130202203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7218.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21130202203 its reverse (30220203112), we get a palindrome (51350405315).

Subtracting 21130202203 from its reverse (30220203112), we obtain a palindrome (9090000909).

The spelling of 21130202203 in words is "twenty-one billion, one hundred thirty million, two hundred two thousand, two hundred three".