21303341212143 has 4 divisors (see below), whose sum is σ = 28404454949528. Its totient is φ = 14202227474760.

The previous prime is 21303341212079. The next prime is 21303341212151. The reversal of 21303341212143 is 34121214330312.

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

It is not a de Polignac number, because 21303341212143 - 2⁶ = 21303341212079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21303341212143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303341219143) 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, 3550556868688 + ... + 3550556868693.

It is an arithmetic number, because the mean of its divisors is an integer number (7101113737382).

Almost surely, 2^{21303341212143} is an apocalyptic number.

21303341212143 is a deficient number, since it is larger than the sum of its proper divisors (7101113737385).

21303341212143 is an equidigital number, since it uses as much as digits as its factorization.

21303341212143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101113737384.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 21303341212143 its reverse (34121214330312), we get a palindrome (55424555542455).

The spelling of 21303341212143 in words is "twenty-one trillion, three hundred three billion, three hundred forty-one million, two hundred twelve thousand, one hundred forty-three".