21234662299 has 2 divisors, whose sum is σ = 21234662300. Its totient is φ = 21234662298.

The previous prime is 21234662227. The next prime is 21234662303. The reversal of 21234662299 is 99226643212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21234662299 - 2⁹ = 21234661787 is a prime.

It is not a weakly prime, because it can be changed into another prime (21234662699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10617331149 + 10617331150.

It is an arithmetic number, because the mean of its divisors is an integer number (10617331150).

Almost surely, 2^21234662299 is an apocalyptic number.

21234662299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21234662299 is an equidigital number, since it uses as much as digits as its factorization.

21234662299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 46.

The spelling of 21234662299 in words is "twenty-one billion, two hundred thirty-four million, six hundred sixty-two thousand, two hundred ninety-nine".