21223231230223 has 8 divisors (see below), whose sum is σ = 23717313836496. Its totient is φ = 18823264948800.

The previous prime is 21223231230203. The next prime is 21223231230239. The reversal of 21223231230223 is 32203213232212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21223231230223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21223231230191 and 21223231230200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223231230203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23529080736 + ... + 23529081637.

It is an arithmetic number, because the mean of its divisors is an integer number (2964664229562).

Almost surely, 2^{21223231230223} is an apocalyptic number.

21223231230223 is a deficient number, since it is larger than the sum of its proper divisors (2494082606273).

21223231230223 is a wasteful number, since it uses less digits than its factorization.

21223231230223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47058162425.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21223231230223 its reverse (32203213232212), we get a palindrome (53426444462435).

The spelling of 21223231230223 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirty-one million, two hundred thirty thousand, two hundred twenty-three".