1321441400120 has 32 divisors (see below), whose sum is σ = 2974701520800. Its totient is φ = 528317294208.

The previous prime is 1321441400077. The next prime is 1321441400159. The reversal of 1321441400120 is 210041441231.

It is a super-2 number, since 2×1321441400120² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8019479 + ... + 8182598.

It is an arithmetic number, because the mean of its divisors is an integer number (92959422525).

Almost surely, 2^{1321441400120} is an apocalyptic number.

1321441400120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321441400120 is an abundant number, since it is smaller than the sum of its proper divisors (1653260120680).

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

1321441400120 is a wasteful number, since it uses less digits than its factorization.

1321441400120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16204127 (or 16204123 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1321441400120 its reverse (210041441231), we get a palindrome (1531482841351).

The spelling of 1321441400120 in words is "one trillion, three hundred twenty-one billion, four hundred forty-one million, four hundred thousand, one hundred twenty".