1323120232220 has 24 divisors (see below), whose sum is σ = 2779084284144. Its totient is φ = 529146798336.

The previous prime is 1323120232201. The next prime is 1323120232261. The reversal of 1323120232220 is 222320213231.

It is a super-2 number, since 2×1323120232220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6223757 + ... + 6432836.

It is an arithmetic number, because the mean of its divisors is an integer number (115795178506).

Almost surely, 2^{1323120232220} is an apocalyptic number.

1323120232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323120232220 is an abundant number, since it is smaller than the sum of its proper divisors (1455964051924).

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

1323120232220 is a wasteful number, since it uses less digits than its factorization.

1323120232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12661829 (or 12661827 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1323120232220 its reverse (222320213231), we get a palindrome (1545440445451).

The spelling of 1323120232220 in words is "one trillion, three hundred twenty-three billion, one hundred twenty million, two hundred thirty-two thousand, two hundred twenty".