12121311322 has 16 divisors (see below), whose sum is σ = 18249633000. Its totient is φ = 6038138880.

The previous prime is 12121311289. The next prime is 12121311341. The reversal of 12121311322 is 22311312121.

It can be written as a sum of positive squares in 4 ways, for example, as 12076031881 + 45279441 = 109891^2 + 6729^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12121311322.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662554 + ... + 680602.

Almost surely, 2^12121311322 is an apocalyptic number.

12121311322 is a deficient number, since it is larger than the sum of its proper divisors (6128321678).

12121311322 is a wasteful number, since it uses less digits than its factorization.

12121311322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19281.

The product of its digits is 144, while the sum is 19.

Adding to 12121311322 its reverse (22311312121), we get a palindrome (34432623443).

The spelling of 12121311322 in words is "twelve billion, one hundred twenty-one million, three hundred eleven thousand, three hundred twenty-two".