1331321031212 has 12 divisors (see below), whose sum is σ = 2466859557960. Its totient is φ = 626504014656.

The previous prime is 1331321031203. The next prime is 1331321031233. The reversal of 1331321031212 is 2121301231331.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9789125162 + ... + 9789125297.

It is an arithmetic number, because the mean of its divisors is an integer number (205571629830).

Almost surely, 2^{1331321031212} is an apocalyptic number.

It is an amenable number.

1331321031212 is a deficient number, since it is larger than the sum of its proper divisors (1135538526748).

1331321031212 is a wasteful number, since it uses less digits than its factorization.

1331321031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19578250480 (or 19578250478 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1331321031212 its reverse (2121301231331), we get a palindrome (3452622262543).

The spelling of 1331321031212 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, thirty-one thousand, two hundred twelve".