120101102191 has 4 divisors (see below), whose sum is σ = 137258402512. Its totient is φ = 102943801872.

The previous prime is 120101102171. The next prime is 120101102207. The reversal of 120101102191 is 191201101021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120101102191 - 2³¹ = 117953618543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101102101) 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 in 3 ways as a sum of consecutive naturals, for example, 8578650150 + ... + 8578650163.

It is an arithmetic number, because the mean of its divisors is an integer number (34314600628).

Almost surely, 2^120101102191 is an apocalyptic number.

120101102191 is a deficient number, since it is larger than the sum of its proper divisors (17157300321).

120101102191 is an equidigital number, since it uses as much as digits as its factorization.

120101102191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17157300320.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 120101102191 in words is "one hundred twenty billion, one hundred one million, one hundred two thousand, one hundred ninety-one".