10120111321 has 2 divisors, whose sum is σ = 10120111322. Its totient is φ = 10120111320.

The previous prime is 10120111289. The next prime is 10120111357. The reversal of 10120111321 is 12311102101.

It is a happy number.

10120111321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8640632025 + 1479479296 = 92955^2 + 38464^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120111321 - 2⁵ = 10120111289 is a prime.

It is not a weakly prime, because it can be changed into another prime (10120111381) 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 as a sum of consecutive naturals, namely, 5060055660 + 5060055661.

It is an arithmetic number, because the mean of its divisors is an integer number (5060055661).

Almost surely, 2^10120111321 is an apocalyptic number.

It is an amenable number.

10120111321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120111321 is an equidigital number, since it uses as much as digits as its factorization.

10120111321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 10120111321 its reverse (12311102101), we get a palindrome (22431213422).

The spelling of 10120111321 in words is "ten billion, one hundred twenty million, one hundred eleven thousand, three hundred twenty-one".