120102111191 has 4 divisors (see below), whose sum is σ = 120119346984. Its totient is φ = 120084875400.

The previous prime is 120102111187. The next prime is 120102111197. The reversal of 120102111191 is 191111201021.

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 120102111191 - 2² = 120102111187 is a prime.

It is a super-2 number, since 2×120102111191² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102111197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8607440 + ... + 8621381.

It is an arithmetic number, because the mean of its divisors is an integer number (30029836746).

Almost surely, 2^120102111191 is an apocalyptic number.

120102111191 is a deficient number, since it is larger than the sum of its proper divisors (17235793).

120102111191 is an equidigital number, since it uses as much as digits as its factorization.

120102111191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235792.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 120102111191 in words is "one hundred twenty billion, one hundred two million, one hundred eleven thousand, one hundred ninety-one".