21122344143323 has 2 divisors, whose sum is σ = 21122344143324. Its totient is φ = 21122344143322.

The previous prime is 21122344143253. The next prime is 21122344143449. The reversal of 21122344143323 is 32334144322112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21122344143323 is a prime.

It is not a weakly prime, because it can be changed into another prime (21122344140323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561172071661 + 10561172071662.

It is an arithmetic number, because the mean of its divisors is an integer number (10561172071662).

Almost surely, 2^{21122344143323} is an apocalyptic number.

21122344143323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122344143323 is an equidigital number, since it uses as much as digits as its factorization.

21122344143323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 35.

Adding to 21122344143323 its reverse (32334144322112), we get a palindrome (53456488465435).

The spelling of 21122344143323 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred forty-four million, one hundred forty-three thousand, three hundred twenty-three".