120012111011321 has 2 divisors, whose sum is σ = 120012111011322. Its totient is φ = 120012111011320.

The previous prime is 120012111011293. The next prime is 120012111011341. The reversal of 120012111011321 is 123110111210021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89623407377296 + 30388703634025 = 9466964^2 + 5512595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120012111011321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120012111011321.

It is not a weakly prime, because it can be changed into another prime (120012111011341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60006055505660 + 60006055505661.

It is an arithmetic number, because the mean of its divisors is an integer number (60006055505661).

Almost surely, 2^{120012111011321} is an apocalyptic number.

It is an amenable number.

120012111011321 is a deficient number, since it is larger than the sum of its proper divisors (1).

120012111011321 is an equidigital number, since it uses as much as digits as its factorization.

120012111011321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 120012111011321 its reverse (123110111210021), we get a palindrome (243122222221342).

The spelling of 120012111011321 in words is "one hundred twenty trillion, twelve billion, one hundred eleven million, eleven thousand, three hundred twenty-one".