1311121322 has 12 divisors (see below), whose sum is σ = 2287773090. Its totient is φ = 561909096.

The previous prime is 1311121321. The next prime is 1311121387. The reversal of 1311121322 is 2231211131.

It can be written as a sum of positive squares in only one way, i.e., 1223530441 + 87590881 = 34979^2 + 9359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1311121322.

It is not an unprimeable number, because it can be changed into a prime (1311121321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6689297 + ... + 6689492.

Almost surely, 2^1311121322 is an apocalyptic number.

1311121322 is a deficient number, since it is larger than the sum of its proper divisors (976651768).

1311121322 is a wasteful number, since it uses less digits than its factorization.

1311121322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13378805 (or 13378798 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 1311121322 is about 36209.4093020033. The cubic root of 1311121322 is about 1094.4962889686.

Adding to 1311121322 its reverse (2231211131), we get a palindrome (3542332453).

The spelling of 1311121322 in words is "one billion, three hundred eleven million, one hundred twenty-one thousand, three hundred twenty-two".