1316221232304 has 120 divisors (see below), whose sum is σ = 3741587536960. Its totient is φ = 398413572480.

The previous prime is 1316221232279. The next prime is 1316221232317. The reversal of 1316221232304 is 4032321226131.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5142927 + ... + 5392785.

Almost surely, 2^{1316221232304} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1316221232304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870793768480).

1316221232304 is an abundant number, since it is smaller than the sum of its proper divisors (2425366304656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1316221232304 is a wasteful number, since it uses less digits than its factorization.

1316221232304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250799 (or 250782 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 1316221232304 its reverse (4032321226131), we get a palindrome (5348542458435).

The spelling of 1316221232304 in words is "one trillion, three hundred sixteen billion, two hundred twenty-one million, two hundred thirty-two thousand, three hundred four".