1320881541120 has 520 divisors, whose sum is σ = 4747437547776. Its totient is φ = 351312740352.

The previous prime is 1320881541097. The next prime is 1320881541127. The reversal of 1320881541120 is 211451880231.

It is a happy number.

1320881541120 is a `hidden beast` number, since 1 + 3 + 20 + 8 + 81 + 541 + 12 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320881541127) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 834415849 + ... + 834417431.

Almost surely, 2^{1320881541120} is an apocalyptic number.

1320881541120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320881541120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2373718773888).

1320881541120 is an abundant number, since it is smaller than the sum of its proper divisors (3426556006656).

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

1320881541120 is an equidigital number, since it uses as much as digits as its factorization.

1320881541120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127 (or 2096 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The spelling of 1320881541120 in words is "one trillion, three hundred twenty billion, eight hundred eighty-one million, five hundred forty-one thousand, one hundred twenty".