21113323022343 has 4 divisors (see below), whose sum is σ = 28151097363128. Its totient is φ = 14075548681560.

The previous prime is 21113323022257. The next prime is 21113323022353. The reversal of 21113323022343 is 34322032331112.

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

It is not a de Polignac number, because 21113323022343 - 2¹⁴ = 21113323005959 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 21113323022343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113323022353) 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, 3518887170388 + ... + 3518887170393.

It is an arithmetic number, because the mean of its divisors is an integer number (7037774340782).

Almost surely, 2^{21113323022343} is an apocalyptic number.

21113323022343 is a deficient number, since it is larger than the sum of its proper divisors (7037774340785).

21113323022343 is an equidigital number, since it uses as much as digits as its factorization.

21113323022343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037774340784.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 21113323022343 its reverse (34322032331112), we get a palindrome (55435355353455).

The spelling of 21113323022343 in words is "twenty-one trillion, one hundred thirteen billion, three hundred twenty-three million, twenty-two thousand, three hundred forty-three".