1321412323520 has 28 divisors (see below), whose sum is σ = 3146613096144. Its totient is φ = 528564929280.

The previous prime is 1321412323519. The next prime is 1321412323529. The reversal of 1321412323520 is 253232141231.

It is a super-2 number, since 2×1321412323520² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321412323529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2064706436 + ... + 2064707075.

It is an arithmetic number, because the mean of its divisors is an integer number (112379039148).

Almost surely, 2^{1321412323520} is an apocalyptic number.

1321412323520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321412323520 is an abundant number, since it is smaller than the sum of its proper divisors (1825200772624).

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

1321412323520 is an equidigital number, since it uses as much as digits as its factorization.

1321412323520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129413528 (or 4129413518 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1321412323520 its reverse (253232141231), we get a palindrome (1574644464751).

The spelling of 1321412323520 in words is "one trillion, three hundred twenty-one billion, four hundred twelve million, three hundred twenty-three thousand, five hundred twenty".