21322502303 has 2 divisors, whose sum is σ = 21322502304. Its totient is φ = 21322502302.

The previous prime is 21322502281. The next prime is 21322502309. The reversal of 21322502303 is 30320522312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21322502303 - 2¹² = 21322498207 is a prime.

It is a super-2 number, since 2×21322502303² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322502309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661251151 + 10661251152.

It is an arithmetic number, because the mean of its divisors is an integer number (10661251152).

Almost surely, 2^21322502303 is an apocalyptic number.

21322502303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322502303 is an equidigital number, since it uses as much as digits as its factorization.

21322502303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The spelling of 21322502303 in words is "twenty-one billion, three hundred twenty-two million, five hundred two thousand, three hundred three".