1321310320012 has 48 divisors (see below), whose sum is σ = 2410832057760. Its totient is φ = 632864558592.

The previous prime is 1321310319977. The next prime is 1321310320039. The reversal of 1321310320012 is 2100230131231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29648098 + ... + 29692630.

It is an arithmetic number, because the mean of its divisors is an integer number (50225667870).

Almost surely, 2^{1321310320012} is an apocalyptic number.

It is an amenable number.

1321310320012 is a deficient number, since it is larger than the sum of its proper divisors (1089521737748).

1321310320012 is a wasteful number, since it uses less digits than its factorization.

1321310320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46570 (or 46568 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1321310320012 its reverse (2100230131231), we get a palindrome (3421540451243).

The spelling of 1321310320012 in words is "one trillion, three hundred twenty-one billion, three hundred ten million, three hundred twenty thousand, twelve".