21130202203223 has 4 divisors (see below), whose sum is σ = 21130294867728. Its totient is φ = 21130109538720.

The previous prime is 21130202203193. The next prime is 21130202203247. The reversal of 21130202203223 is 32230220203112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21130202203223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130202203723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45989363 + ... + 46446548.

It is an arithmetic number, because the mean of its divisors is an integer number (5282573716932).

Almost surely, 2^{21130202203223} is an apocalyptic number.

21130202203223 is a deficient number, since it is larger than the sum of its proper divisors (92664505).

21130202203223 is an equidigital number, since it uses as much as digits as its factorization.

21130202203223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92664504.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21130202203223 its reverse (32230220203112), we get a palindrome (53360422406335).

The spelling of 21130202203223 in words is "twenty-one trillion, one hundred thirty billion, two hundred two million, two hundred three thousand, two hundred twenty-three".