1321300133220 has 48 divisors (see below), whose sum is σ = 3701214413568. Its totient is φ = 352196793600.

The previous prime is 1321300133203. The next prime is 1321300133227. The reversal of 1321300133220 is 223310031231.

It is not an unprimeable number, because it can be changed into a prime (1321300133227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4542409 + ... + 4824528.

It is an arithmetic number, because the mean of its divisors is an integer number (77108633616).

Almost surely, 2^{1321300133220} is an apocalyptic number.

1321300133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321300133220 is an abundant number, since it is smaller than the sum of its proper divisors (2379914280348).

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

1321300133220 is a wasteful number, since it uses less digits than its factorization.

1321300133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369300 (or 9369298 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1321300133220 its reverse (223310031231), we get a palindrome (1544610164451).

The spelling of 1321300133220 in words is "one trillion, three hundred twenty-one billion, three hundred million, one hundred thirty-three thousand, two hundred twenty".