1320322032120 has 128 divisors (see below), whose sum is σ = 4875035235840. Its totient is φ = 278573437440.

The previous prime is 1320322032061. The next prime is 1320322032121. The reversal of 1320322032120 is 212302230231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320322032121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60443386 + ... + 60465225.

It is an arithmetic number, because the mean of its divisors is an integer number (38086212780).

Almost surely, 2^{1320322032120} is an apocalyptic number.

1320322032120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320322032120 is an abundant number, since it is smaller than the sum of its proper divisors (3554713203720).

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

1320322032120 is a wasteful number, since it uses less digits than its factorization.

1320322032120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120908645 (or 120908641 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1320322032120 its reverse (212302230231), we get a palindrome (1532624262351).

The spelling of 1320322032120 in words is "one trillion, three hundred twenty billion, three hundred twenty-two million, thirty-two thousand, one hundred twenty".