21160520422303 has 2 divisors, whose sum is σ = 21160520422304. Its totient is φ = 21160520422302.

The previous prime is 21160520422289. The next prime is 21160520422309. The reversal of 21160520422303 is 30322402506112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21160520422303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21160520422309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10580260211151 + 10580260211152.

It is an arithmetic number, because the mean of its divisors is an integer number (10580260211152).

Almost surely, 2^{21160520422303} is an apocalyptic number.

21160520422303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21160520422303 is an equidigital number, since it uses as much as digits as its factorization.

21160520422303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 21160520422303 its reverse (30322402506112), we get a palindrome (51482922928415).

The spelling of 21160520422303 in words is "twenty-one trillion, one hundred sixty billion, five hundred twenty million, four hundred twenty-two thousand, three hundred three".