21033229999 has 2 divisors, whose sum is σ = 21033230000. Its totient is φ = 21033229998.

The previous prime is 21033229967. The next prime is 21033230039. The reversal of 21033229999 is 99992233012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21033229999 - 2⁵ = 21033229967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21073229999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516614999 + 10516615000.

It is an arithmetic number, because the mean of its divisors is an integer number (10516615000).

Almost surely, 2^21033229999 is an apocalyptic number.

21033229999 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033229999 is an equidigital number, since it uses as much as digits as its factorization.

21033229999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 49.

The spelling of 21033229999 in words is "twenty-one billion, thirty-three million, two hundred twenty-nine thousand, nine hundred ninety-nine".