1311266154212 has 24 divisors (see below), whose sum is σ = 2640133204800. Its totient is φ = 558199588320.

The previous prime is 1311266154203. The next prime is 1311266154241. The reversal of 1311266154212 is 2124516621131.

It is a happy number.

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, 157146614 + ... + 157154957.

It is an arithmetic number, because the mean of its divisors is an integer number (110005550200).

Almost surely, 2^{1311266154212} is an apocalyptic number.

It is an amenable number.

1311266154212 is an abundant number, since it is smaller than the sum of its proper divisors (1328867050588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311266154212 is a wasteful number, since it uses less digits than its factorization.

1311266154212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314301731 (or 314301729 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The spelling of 1311266154212 in words is "one trillion, three hundred eleven billion, two hundred sixty-six million, one hundred fifty-four thousand, two hundred twelve".