213021329999 has 2 divisors, whose sum is σ = 213021330000. Its totient is φ = 213021329998.

The previous prime is 213021329971. The next prime is 213021330001. The reversal of 213021329999 is 999923120312.

It is a happy number.

213021329999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213021329999 - 2²⁰ = 213020281423 is a prime.

Together with 213021330001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213021329099) 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, 106510664999 + 106510665000.

It is an arithmetic number, because the mean of its divisors is an integer number (106510665000).

Almost surely, 2^213021329999 is an apocalyptic number.

213021329999 is a deficient number, since it is larger than the sum of its proper divisors (1).

213021329999 is an equidigital number, since it uses as much as digits as its factorization.

213021329999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 50.

The spelling of 213021329999 in words is "two hundred thirteen billion, twenty-one million, three hundred twenty-nine thousand, nine hundred ninety-nine".