1321031300120 has 64 divisors (see below), whose sum is σ = 3419735976000. Its totient is φ = 449885237760.

The previous prime is 1321031300111. The next prime is 1321031300131. The reversal of 1321031300120 is 210031301231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15790391 + ... + 15873830.

It is an arithmetic number, because the mean of its divisors is an integer number (53433374625).

Almost surely, 2^{1321031300120} is an apocalyptic number.

1321031300120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321031300120 is an abundant number, since it is smaller than the sum of its proper divisors (2098704675880).

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

1321031300120 is a wasteful number, since it uses less digits than its factorization.

1321031300120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31664388 (or 31664384 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1321031300120 its reverse (210031301231), we get a palindrome (1531062601351).

The spelling of 1321031300120 in words is "one trillion, three hundred twenty-one billion, thirty-one million, three hundred thousand, one hundred twenty".