120031225521 has 4 divisors (see below), whose sum is σ = 160041634032. Its totient is φ = 80020817012.

The previous prime is 120031225519. The next prime is 120031225529. The reversal of 120031225521 is 125522130021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120031225521 - 2¹ = 120031225519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120031225491 and 120031225500.

It is not an unprimeable number, because it can be changed into a prime (120031225529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20005204251 + ... + 20005204256.

It is an arithmetic number, because the mean of its divisors is an integer number (40010408508).

Almost surely, 2^120031225521 is an apocalyptic number.

It is an amenable number.

120031225521 is a deficient number, since it is larger than the sum of its proper divisors (40010408511).

120031225521 is an equidigital number, since it uses as much as digits as its factorization.

120031225521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40010408510.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 120031225521 its reverse (125522130021), we get a palindrome (245553355542).

The spelling of 120031225521 in words is "one hundred twenty billion, thirty-one million, two hundred twenty-five thousand, five hundred twenty-one".