1321332412420 has 24 divisors (see below), whose sum is σ = 2920840070400. Its totient is φ = 500715440352.

The previous prime is 1321332412409. The next prime is 1321332412423. The reversal of 1321332412420 is 242142331231.

It is a super-2 number, since 2×1321332412420² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321332412423) 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, 1738594900 + ... + 1738595659.

It is an arithmetic number, because the mean of its divisors is an integer number (121701669600).

Almost surely, 2^{1321332412420} is an apocalyptic number.

1321332412420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321332412420 is an abundant number, since it is smaller than the sum of its proper divisors (1599507657980).

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

1321332412420 is a wasteful number, since it uses less digits than its factorization.

1321332412420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477190587 (or 3477190585 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1321332412420 its reverse (242142331231), we get a palindrome (1563474743651).

The spelling of 1321332412420 in words is "one trillion, three hundred twenty-one billion, three hundred thirty-two million, four hundred twelve thousand, four hundred twenty".