21054303299 has 2 divisors, whose sum is σ = 21054303300. Its totient is φ = 21054303298.

The previous prime is 21054303289. The next prime is 21054303317. The reversal of 21054303299 is 99230345012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21054303299 - 2³² = 16759336003 is a prime.

It is not a weakly prime, because it can be changed into another prime (21054303289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10527151649 + 10527151650.

It is an arithmetic number, because the mean of its divisors is an integer number (10527151650).

Almost surely, 2^21054303299 is an apocalyptic number.

21054303299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21054303299 is an equidigital number, since it uses as much as digits as its factorization.

21054303299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 21054303299 in words is "twenty-one billion, fifty-four million, three hundred three thousand, two hundred ninety-nine".