120324255521 has 8 divisors (see below), whose sum is σ = 122894486400. Its totient is φ = 117754447248.

The previous prime is 120324255509. The next prime is 120324255593. The reversal of 120324255521 is 125552423021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120324255521 - 2²² = 120320061217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120324455521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507455 + ... + 705803.

It is an arithmetic number, because the mean of its divisors is an integer number (15361810800).

Almost surely, 2^120324255521 is an apocalyptic number.

It is an amenable number.

120324255521 is a deficient number, since it is larger than the sum of its proper divisors (2570230879).

120324255521 is a wasteful number, since it uses less digits than its factorization.

120324255521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211303.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 120324255521 its reverse (125552423021), we get a palindrome (245876678542).

The spelling of 120324255521 in words is "one hundred twenty billion, three hundred twenty-four million, two hundred fifty-five thousand, five hundred twenty-one".