1321241333120 has 64 divisors (see below), whose sum is σ = 3162195493200. Its totient is φ = 527893690368.

The previous prime is 1321241333107. The next prime is 1321241333197. The reversal of 1321241333120 is 213331421231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1321241333120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615710 + ... + 1738269.

Almost surely, 2^{1321241333120} is an apocalyptic number.

1321241333120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321241333120 is an abundant number, since it is smaller than the sum of its proper divisors (1840954160080).

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

1321241333120 is an equidigital number, since it uses as much as digits as its factorization.

1321241333120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354875 (or 2354863 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 1321241333120 its reverse (213331421231), we get a palindrome (1534572754351).

The spelling of 1321241333120 in words is "one trillion, three hundred twenty-one billion, two hundred forty-one million, three hundred thirty-three thousand, one hundred twenty".