1311022113412 has 48 divisors (see below), whose sum is σ = 2528572842432. Its totient is φ = 589807370880.

The previous prime is 1311022113403. The next prime is 1311022113449. The reversal of 1311022113412 is 2143112201131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5018458 + ... + 5273230.

It is an arithmetic number, because the mean of its divisors is an integer number (52678600884).

Almost surely, 2^{1311022113412} is an apocalyptic number.

It is an amenable number.

1311022113412 is a deficient number, since it is larger than the sum of its proper divisors (1217550729020).

1311022113412 is a wasteful number, since it uses less digits than its factorization.

1311022113412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255988 (or 255986 counting only the distinct ones).

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

Adding to 1311022113412 its reverse (2143112201131), we get a palindrome (3454134314543).

The spelling of 1311022113412 in words is "one trillion, three hundred eleven billion, twenty-two million, one hundred thirteen thousand, four hundred twelve".