1323332002020 has 192 divisors, whose sum is σ = 4325854740480. Its totient is φ = 295992033792.

The previous prime is 1323332002009. The next prime is 1323332002093. The reversal of 1323332002020 is 202002333231.

It is a super-2 number, since 2×1323332002020² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8447971 + ... + 8603189.

It is an arithmetic number, because the mean of its divisors is an integer number (22530493440).

Almost surely, 2^{1323332002020} is an apocalyptic number.

1323332002020 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 1323332002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2162927370240).

1323332002020 is an abundant number, since it is smaller than the sum of its proper divisors (3002522738460).

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

1323332002020 is a wasteful number, since it uses less digits than its factorization.

1323332002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155674 (or 155672 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 1323332002020 its reverse (202002333231), we get a palindrome (1525334335251).

The spelling of 1323332002020 in words is "one trillion, three hundred twenty-three billion, three hundred thirty-two million, two thousand, twenty".