21296493299 has 2 divisors, whose sum is σ = 21296493300. Its totient is φ = 21296493298.

The previous prime is 21296493289. The next prime is 21296493371. The reversal of 21296493299 is 99239469212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21296493299 is a prime.

It is not a weakly prime, because it can be changed into another prime (21296493289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10648246649 + 10648246650.

It is an arithmetic number, because the mean of its divisors is an integer number (10648246650).

Almost surely, 2^21296493299 is an apocalyptic number.

21296493299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21296493299 is an equidigital number, since it uses as much as digits as its factorization.

21296493299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 56.

The spelling of 21296493299 in words is "twenty-one billion, two hundred ninety-six million, four hundred ninety-three thousand, two hundred ninety-nine".