120101010191 has 2 divisors, whose sum is σ = 120101010192. Its totient is φ = 120101010190.

The previous prime is 120101010179. The next prime is 120101010223. The reversal of 120101010191 is 191010101021.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (191010101021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120101010191 - 2¹⁰ = 120101009167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120101010791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60050505095 + 60050505096.

It is an arithmetic number, because the mean of its divisors is an integer number (60050505096).

Almost surely, 2^120101010191 is an apocalyptic number.

120101010191 is a deficient number, since it is larger than the sum of its proper divisors (1).

120101010191 is an equidigital number, since it uses as much as digits as its factorization.

120101010191 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.

It can be divided in two parts, 12010 and 1010191, that added together give a palindrome (1022201).

The spelling of 120101010191 in words is "one hundred twenty billion, one hundred one million, ten thousand, one hundred ninety-one".