21200223131323 has 4 divisors (see below), whose sum is σ = 21203163122328. Its totient is φ = 21197283140320.

The previous prime is 21200223131293. The next prime is 21200223131357. The reversal of 21200223131323 is 32313132200212.

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 21200223131323 - 2³³ = 21191633196731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200223131383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469984686 + ... + 1469999107.

It is an arithmetic number, because the mean of its divisors is an integer number (5300790780582).

Almost surely, 2^{21200223131323} is an apocalyptic number.

21200223131323 is a deficient number, since it is larger than the sum of its proper divisors (2939991005).

21200223131323 is an equidigital number, since it uses as much as digits as its factorization.

21200223131323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939991004.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21200223131323 its reverse (32313132200212), we get a palindrome (53513355331535).

The spelling of 21200223131323 in words is "twenty-one trillion, two hundred billion, two hundred twenty-three million, one hundred thirty-one thousand, three hundred twenty-three".