21223224314231 has 8 divisors (see below), whose sum is σ = 21250110768000. Its totient is φ = 21196347060960.

The previous prime is 21223224314183. The next prime is 21223224314273. The reversal of 21223224314231 is 13241342232212.

It is a happy number.

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-21223224314231 is a prime.

It is a super-2 number, since 2×21223224314231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223224314431) 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, 2322170 + ... + 6916568.

It is an arithmetic number, because the mean of its divisors is an integer number (2656263846000).

Almost surely, 2^{21223224314231} is an apocalyptic number.

21223224314231 is a deficient number, since it is larger than the sum of its proper divisors (26886453769).

21223224314231 is an equidigital number, since it uses as much as digits as its factorization.

21223224314231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600249.

The product of its digits is 27648, while the sum is 32.

Adding to 21223224314231 its reverse (13241342232212), we get a palindrome (34464566546443).

The spelling of 21223224314231 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred twenty-four million, three hundred fourteen thousand, two hundred thirty-one".