323121223120 has 40 divisors (see below), whose sum is σ = 751282914816. Its totient is φ = 129244003968.

The previous prime is 323121223069. The next prime is 323121223121. The reversal of 323121223120 is 21322121323.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 323121223091 and 323121223100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323121223121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3193629 + ... + 3293251.

Almost surely, 2^323121223120 is an apocalyptic number.

It is an amenable number.

323121223120 is an abundant number, since it is smaller than the sum of its proper divisors (428161691696).

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

323121223120 is a wasteful number, since it uses less digits than its factorization.

323121223120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140179 (or 140173 counting only the distinct ones).

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

Adding to 323121223120 its reverse (21322121323), we get a palindrome (344443344443).

The spelling of 323121223120 in words is "three hundred twenty-three billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred twenty".