120311211321 has 24 divisors (see below), whose sum is σ = 203227801920. Its totient is φ = 67150442016.

The previous prime is 120311211301. The next prime is 120311211341. The reversal of 120311211321 is 123112113021.

120311211321 is a `hidden beast` number, since 1 + 20 + 311 + 2 + 11 + 321 = 666.

It is an interprime number because it is at equal distance from previous prime (120311211301) and next prime (120311211341).

It is not a de Polignac number, because 120311211321 - 2⁵ = 120311211289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120311211294 and 120311211303.

It is not an unprimeable number, because it can be changed into a prime (120311211301) 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 23 ways as a sum of consecutive naturals, for example, 22203126 + ... + 22208543.

It is an arithmetic number, because the mean of its divisors is an integer number (8467825080).

Almost surely, 2^120311211321 is an apocalyptic number.

It is an amenable number.

120311211321 is a deficient number, since it is larger than the sum of its proper divisors (82916590599).

120311211321 is a wasteful number, since it uses less digits than its factorization.

120311211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44411725 (or 44411722 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 120311211321 its reverse (123112113021), we get a palindrome (243423324342).

The spelling of 120311211321 in words is "one hundred twenty billion, three hundred eleven million, two hundred eleven thousand, three hundred twenty-one".