21032223012223 has 4 divisors (see below), whose sum is σ = 21757472081640. Its totient is φ = 20306973942808.

The previous prime is 21032223012217. The next prime is 21032223012259. The reversal of 21032223012223 is 32221032223012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21032223012223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032223012263) 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, 362624534665 + ... + 362624534722.

It is an arithmetic number, because the mean of its divisors is an integer number (5439368020410).

Almost surely, 2^{21032223012223} is an apocalyptic number.

21032223012223 is a deficient number, since it is larger than the sum of its proper divisors (725249069417).

21032223012223 is an equidigital number, since it uses as much as digits as its factorization.

21032223012223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725249069416.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21032223012223 its reverse (32221032223012), we get a palindrome (53253255235235).

The spelling of 21032223012223 in words is "twenty-one trillion, thirty-two billion, two hundred twenty-three million, twelve thousand, two hundred twenty-three".