2120120031321 has 32 divisors (see below), whose sum is σ = 3194429760000. Its totient is φ = 1389337447824.

The previous prime is 2120120031317. The next prime is 2120120031349. The reversal of 2120120031321 is 1231300210212.

2120120031321 is a `hidden beast` number, since 212 + 0 + 120 + 0 + 313 + 21 = 666.

It is not a de Polignac number, because 2120120031321 - 2² = 2120120031317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120120031294 and 2120120031303.

It is not an unprimeable number, because it can be changed into a prime (2120120031311) 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 31 ways as a sum of consecutive naturals, for example, 20815906 + ... + 20917508.

It is an arithmetic number, because the mean of its divisors is an integer number (99825930000).

Almost surely, 2^{2120120031321} is an apocalyptic number.

It is an amenable number.

2120120031321 is a deficient number, since it is larger than the sum of its proper divisors (1074309728679).

2120120031321 is a wasteful number, since it uses less digits than its factorization.

2120120031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114770 (or 114764 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2120120031321 its reverse (1231300210212), we get a palindrome (3351420241533).

The spelling of 2120120031321 in words is "two trillion, one hundred twenty billion, one hundred twenty million, thirty-one thousand, three hundred twenty-one".