1323321132120 has 128 divisors (see below), whose sum is σ = 4304039544000. Its totient is φ = 323554351104.

The previous prime is 1323321132079. The next prime is 1323321132121. The reversal of 1323321132120 is 212311233231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323321132121) 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, 2614147 + ... + 3079026.

Almost surely, 2^{1323321132120} is an apocalyptic number.

1323321132120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323321132120 is an abundant number, since it is smaller than the sum of its proper divisors (2980718411880).

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

1323321132120 is a wasteful number, since it uses less digits than its factorization.

1323321132120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693349 (or 5693345 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1323321132120 its reverse (212311233231), we get a palindrome (1535632365351).

The spelling of 1323321132120 in words is "one trillion, three hundred twenty-three billion, three hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty".