1321121033312 has 12 divisors (see below), whose sum is σ = 2600957034396. Its totient is φ = 660560516640.

The previous prime is 1321121033291. The next prime is 1321121033357. The reversal of 1321121033312 is 2133301211231.

It is a super-2 number, since 2×1321121033312² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20642516114 + ... + 20642516177.

It is an arithmetic number, because the mean of its divisors is an integer number (216746419533).

Almost surely, 2^{1321121033312} is an apocalyptic number.

It is an amenable number.

1321121033312 is a deficient number, since it is larger than the sum of its proper divisors (1279836001084).

1321121033312 is an equidigital number, since it uses as much as digits as its factorization.

1321121033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41285032301 (or 41285032293 counting only the distinct ones).

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

Adding to 1321121033312 its reverse (2133301211231), we get a palindrome (3454422244543).

The spelling of 1321121033312 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-one million, thirty-three thousand, three hundred twelve".