12221123344 has 10 divisors (see below), whose sum is σ = 23678426510. Its totient is φ = 6110561664.

The previous prime is 12221123329. The next prime is 12221123351. The reversal of 12221123344 is 44332112221.

It can be written as a sum of positive squares in only one way, i.e., 9828739600 + 2392383744 = 99140^2 + 48912^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381910089 + ... + 381910120.

It is an arithmetic number, because the mean of its divisors is an integer number (2367842651).

Almost surely, 2^12221123344 is an apocalyptic number.

It is an amenable number.

12221123344 is a deficient number, since it is larger than the sum of its proper divisors (11457303166).

12221123344 is an equidigital number, since it uses as much as digits as its factorization.

12221123344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763820217 (or 763820211 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 12221123344 its reverse (44332112221), we get a palindrome (56553235565).

The spelling of 12221123344 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-three thousand, three hundred forty-four".