1323220321120 has 48 divisors (see below), whose sum is σ = 3142305532800. Its totient is φ = 526545690624.

The previous prime is 1323220321103. The next prime is 1323220321133. The reversal of 1323220321120 is 211230223231.

It is a junction number, because it is equal to n+sod(n) for n = 1323220321091 and 1323220321100.

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, 21394320 + ... + 21456079.

It is an arithmetic number, because the mean of its divisors is an integer number (65464698600).

Almost surely, 2^{1323220321120} is an apocalyptic number.

1323220321120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323220321120 is an abundant number, since it is smaller than the sum of its proper divisors (1819085211680).

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

1323220321120 is a wasteful number, since it uses less digits than its factorization.

1323220321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42850607 (or 42850599 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1323220321120 its reverse (211230223231), we get a palindrome (1534450544351).

The spelling of 1323220321120 in words is "one trillion, three hundred twenty-three billion, two hundred twenty million, three hundred twenty-one thousand, one hundred twenty".