1321293204928 has 14 divisors (see below), whose sum is σ = 2621941203656. Its totient is φ = 660646602432.

The previous prime is 1321293204887. The next prime is 1321293204943. The reversal of 1321293204928 is 8294023921231.

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, 10322603100 + ... + 10322603227.

Almost surely, 2^{1321293204928} is an apocalyptic number.

It is an amenable number.

1321293204928 is a deficient number, since it is larger than the sum of its proper divisors (1300647998728).

1321293204928 is an equidigital number, since it uses as much as digits as its factorization.

1321293204928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20645206339 (or 20645206329 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 1321293204928 in words is "one trillion, three hundred twenty-one billion, two hundred ninety-three million, two hundred four thousand, nine hundred twenty-eight".