1331131311212 has 24 divisors (see below), whose sum is σ = 2466578323440. Its totient is φ = 626396879360.

The previous prime is 1331131311179. The next prime is 1331131311241. The reversal of 1331131311212 is 2121131311331.

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, 2297912 + ... + 2818272.

It is an arithmetic number, because the mean of its divisors is an integer number (102774096810).

Almost surely, 2^{1331131311212} is an apocalyptic number.

It is an amenable number.

1331131311212 is a deficient number, since it is larger than the sum of its proper divisors (1135447012228).

1331131311212 is a wasteful number, since it uses less digits than its factorization.

1331131311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558001 (or 557999 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

Adding to 1331131311212 its reverse (2121131311331), we get a palindrome (3452262622543).

The spelling of 1331131311212 in words is "one trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred eleven thousand, two hundred twelve".