21202323230999 has 4 divisors (see below), whose sum is σ = 21203153385480. Its totient is φ = 21201493076520.

The previous prime is 21202323230969. The next prime is 21202323231041. The reversal of 21202323230999 is 99903232320212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21202323230999 - 2⁸ = 21202323230743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202323230939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415038929 + ... + 415090010.

It is an arithmetic number, because the mean of its divisors is an integer number (5300788346370).

Almost surely, 2^{21202323230999} is an apocalyptic number.

21202323230999 is a deficient number, since it is larger than the sum of its proper divisors (830154481).

21202323230999 is an equidigital number, since it uses as much as digits as its factorization.

21202323230999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830154480.

The product of its (nonzero) digits is 629856, while the sum is 47.

The spelling of 21202323230999 in words is "twenty-one trillion, two hundred two billion, three hundred twenty-three million, two hundred thirty thousand, nine hundred ninety-nine".