12321221222 has 8 divisors (see below), whose sum is σ = 18795083400. Its totient is φ = 6056193424.

The previous prime is 12321221207. The next prime is 12321221249. The reversal of 12321221222 is 22212212321.

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

It is a junction number, because it is equal to n+sod(n) for n = 12321221194 and 12321221203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52208447 + ... + 52208682.

It is an arithmetic number, because the mean of its divisors is an integer number (2349385425).

Almost surely, 2^12321221222 is an apocalyptic number.

12321221222 is a deficient number, since it is larger than the sum of its proper divisors (6473862178).

12321221222 is a wasteful number, since it uses less digits than its factorization.

12321221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104417190.

The product of its digits is 384, while the sum is 20.

Adding to 12321221222 its reverse (22212212321), we get a palindrome (34533433543).

The spelling of 12321221222 in words is "twelve billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".