1321515280801 has 8 divisors (see below), whose sum is σ = 1352601154080. Its totient is φ = 1290445451232.

The previous prime is 1321515280781. The next prime is 1321515280831. The reversal of 1321515280801 is 1080825151231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321515280801 - 2²⁹ = 1320978409889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321515280831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3844171 + ... + 4173808.

It is an arithmetic number, because the mean of its divisors is an integer number (169075144260).

Almost surely, 2^{1321515280801} is an apocalyptic number.

It is an amenable number.

1321515280801 is a deficient number, since it is larger than the sum of its proper divisors (31085873279).

1321515280801 is an equidigital number, since it uses as much as digits as its factorization.

1321515280801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8021855.

The product of its (nonzero) digits is 19200, while the sum is 37.

The spelling of 1321515280801 in words is "one trillion, three hundred twenty-one billion, five hundred fifteen million, two hundred eighty thousand, eight hundred one".