21304141399 has 2 divisors, whose sum is σ = 21304141400. Its totient is φ = 21304141398.

The previous prime is 21304141387. The next prime is 21304141421. The reversal of 21304141399 is 99314140312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21304141399 - 2²³ = 21295752791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21304141349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10652070699 + 10652070700.

It is an arithmetic number, because the mean of its divisors is an integer number (10652070700).

Almost surely, 2^21304141399 is an apocalyptic number.

21304141399 is a deficient number, since it is larger than the sum of its proper divisors (1).

21304141399 is an equidigital number, since it uses as much as digits as its factorization.

21304141399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 21304141399 in words is "twenty-one billion, three hundred four million, one hundred forty-one thousand, three hundred ninety-nine".