21303546371 has 2 divisors, whose sum is σ = 21303546372. Its totient is φ = 21303546370.

The previous prime is 21303546353. The next prime is 21303546389. The reversal of 21303546371 is 17364530312.

It is a balanced prime because it is at equal distance from previous prime (21303546353) and next prime (21303546389).

It is a cyclic number.

It is not a de Polignac number, because 21303546371 - 2⁶ = 21303546307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21303546071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651773185 + 10651773186.

It is an arithmetic number, because the mean of its divisors is an integer number (10651773186).

Almost surely, 2^21303546371 is an apocalyptic number.

21303546371 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303546371 is an equidigital number, since it uses as much as digits as its factorization.

21303546371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 21303546371 in words is "twenty-one billion, three hundred three million, five hundred forty-six thousand, three hundred seventy-one".