21302232103 has 2 divisors, whose sum is σ = 21302232104. Its totient is φ = 21302232102.

The previous prime is 21302232047. The next prime is 21302232131. The reversal of 21302232103 is 30123220312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21302232103 - 2²⁵ = 21268677671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21302232163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651116051 + 10651116052.

It is an arithmetic number, because the mean of its divisors is an integer number (10651116052).

Almost surely, 2^21302232103 is an apocalyptic number.

21302232103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302232103 is an equidigital number, since it uses as much as digits as its factorization.

21302232103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21302232103 its reverse (30123220312), we get a palindrome (51425452415).

The spelling of 21302232103 in words is "twenty-one billion, three hundred two million, two hundred thirty-two thousand, one hundred three".