21243023143302 has 8 divisors (see below), whose sum is σ = 42486046286616. Its totient is φ = 7081007714432.

The previous prime is 21243023143283. The next prime is 21243023143351. The reversal of 21243023143302 is 20334132034212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

21243023143302 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21243023143302.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1770251928603 + ... + 1770251928614.

It is an arithmetic number, because the mean of its divisors is an integer number (5310755785827).

Almost surely, 2^{21243023143302} is an apocalyptic number.

21243023143302 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21243023143302 is a wasteful number, since it uses less digits than its factorization.

21243023143302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540503857222.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 21243023143302 its reverse (20334132034212), we get a palindrome (41577155177514).

The spelling of 21243023143302 in words is "twenty-one trillion, two hundred forty-three billion, twenty-three million, one hundred forty-three thousand, three hundred two".