1000120101191 has 2 divisors, whose sum is σ = 1000120101192. Its totient is φ = 1000120101190.

The previous prime is 1000120101031. The next prime is 1000120101199. The reversal of 1000120101191 is 1911010210001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000120101191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000120101199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500060050595 + 500060050596.

It is an arithmetic number, because the mean of its divisors is an integer number (500060050596).

Almost surely, 2^{1000120101191} is an apocalyptic number.

1000120101191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000120101191 is an equidigital number, since it uses as much as digits as its factorization.

1000120101191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 1000120101191 its reverse (1911010210001), we get a palindrome (2911130311192).

The spelling of 1000120101191 in words is "one trillion, one hundred twenty million, one hundred one thousand, one hundred ninety-one".