12012223321 has 8 divisors (see below), whose sum is σ = 13731986240. Its totient is φ = 10293393168.

The previous prime is 12012223277. The next prime is 12012223357. The reversal of 12012223321 is 12332221021.

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

It is a cyclic number.

It is not a de Polignac number, because 12012223321 - 2²⁹ = 11475352409 is a prime.

It is a super-2 number, since 2×12012223321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12012223021) 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, 205371 + ... + 257296.

It is an arithmetic number, because the mean of its divisors is an integer number (1716498280).

Almost surely, 2^12012223321 is an apocalyptic number.

It is an amenable number.

12012223321 is a deficient number, since it is larger than the sum of its proper divisors (1719762919).

12012223321 is an equidigital number, since it uses as much as digits as its factorization.

12012223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466383.

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

Adding to 12012223321 its reverse (12332221021), we get a palindrome (24344444342).

The spelling of 12012223321 in words is "twelve billion, twelve million, two hundred twenty-three thousand, three hundred twenty-one".