1222311121312 has 24 divisors (see below), whose sum is σ = 2406597655392. Its totient is φ = 611111716800.

The previous prime is 1222311121309. The next prime is 1222311121337. The reversal of 1222311121312 is 2131211132221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914764 + ... + 1811467.

It is an arithmetic number, because the mean of its divisors is an integer number (100274902308).

Almost surely, 2^{1222311121312} is an apocalyptic number.

It is an amenable number.

1222311121312 is a deficient number, since it is larger than the sum of its proper divisors (1184286534080).

1222311121312 is a wasteful number, since it uses less digits than its factorization.

1222311121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740252 (or 2740244 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 1222311121312 its reverse (2131211132221), we get a palindrome (3353522253533).

The spelling of 1222311121312 in words is "one trillion, two hundred twenty-two billion, three hundred eleven million, one hundred twenty-one thousand, three hundred twelve".