12231200321 has 4 divisors (see below), whose sum is σ = 12231508992. Its totient is φ = 12230891652.

The previous prime is 12231200309. The next prime is 12231200329. The reversal of 12231200321 is 12300213221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12231200321 - 2²² = 12227006017 is a prime.

It is a super-2 number, since 2×12231200321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12231200321.

It is not an unprimeable number, because it can be changed into a prime (12231200329) 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, 84305 + ... + 177678.

It is an arithmetic number, because the mean of its divisors is an integer number (3057877248).

Almost surely, 2^12231200321 is an apocalyptic number.

It is an amenable number.

12231200321 is a deficient number, since it is larger than the sum of its proper divisors (308671).

12231200321 is an equidigital number, since it uses as much as digits as its factorization.

12231200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308670.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12231200321 its reverse (12300213221), we get a palindrome (24531413542).

The spelling of 12231200321 in words is "twelve billion, two hundred thirty-one million, two hundred thousand, three hundred twenty-one".