12223021321 has 8 divisors (see below), whose sum is σ = 14035373504. Its totient is φ = 10427220720.

The previous prime is 12223021319. The next prime is 12223021337. The reversal of 12223021321 is 12312032221.

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

It is not a de Polignac number, because 12223021321 - 2¹ = 12223021319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12223021121) 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, 4136310 + ... + 4139263.

It is an arithmetic number, because the mean of its divisors is an integer number (1754421688).

Almost surely, 2^12223021321 is an apocalyptic number.

It is an amenable number.

12223021321 is a deficient number, since it is larger than the sum of its proper divisors (1812352183).

12223021321 is an equidigital number, since it uses as much as digits as its factorization.

12223021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275791.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12223021321 its reverse (12312032221), we get a palindrome (24535053542).

The spelling of 12223021321 in words is "twelve billion, two hundred twenty-three million, twenty-one thousand, three hundred twenty-one".