1321001132012 has 12 divisors (see below), whose sum is σ = 2312057296416. Its totient is φ = 660413333040.

The previous prime is 1321001131999. The next prime is 1321001132039. The reversal of 1321001132012 is 2102311001231.

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, 21774164 + ... + 21834747.

It is an arithmetic number, because the mean of its divisors is an integer number (192671441368).

Almost surely, 2^{1321001132012} is an apocalyptic number.

It is an amenable number.

1321001132012 is a deficient number, since it is larger than the sum of its proper divisors (991056164404).

1321001132012 is a wasteful number, since it uses less digits than its factorization.

1321001132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43616488 (or 43616486 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1321001132012 its reverse (2102311001231), we get a palindrome (3423312133243).

The spelling of 1321001132012 in words is "one trillion, three hundred twenty-one billion, one million, one hundred thirty-two thousand, twelve".