1311122012132 has 6 divisors (see below), whose sum is σ = 2294463521238. Its totient is φ = 655561006064.

The previous prime is 1311122012071. The next prime is 1311122012149. The reversal of 1311122012132 is 2312102211131.

It can be written as a sum of positive squares in only one way, i.e., 1256358523876 + 54763488256 = 1120874^2 + 234016^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163890251513 + ... + 163890251520.

It is an arithmetic number, because the mean of its divisors is an integer number (382410586873).

Almost surely, 2^{1311122012132} is an apocalyptic number.

It is an amenable number.

1311122012132 is a deficient number, since it is larger than the sum of its proper divisors (983341509106).

1311122012132 is a wasteful number, since it uses less digits than its factorization.

1311122012132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327780503037 (or 327780503035 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1311122012132 its reverse (2312102211131), we get a palindrome (3623224223263).

The spelling of 1311122012132 in words is "one trillion, three hundred eleven billion, one hundred twenty-two million, twelve thousand, one hundred thirty-two".