120166191 has 12 divisors (see below), whose sum is σ = 181120368. Its totient is φ = 76627584.

The previous prime is 120166181. The next prime is 120166213. The reversal of 120166191 is 191661021.

It is not a de Polignac number, because 120166191 - 2⁵ = 120166159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120166181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290050 + ... + 290463.

It is an arithmetic number, because the mean of its divisors is an integer number (15093364).

Almost surely, 2^120166191 is an apocalyptic number.

120166191 is a deficient number, since it is larger than the sum of its proper divisors (60954177).

120166191 is a wasteful number, since it uses less digits than its factorization.

120166191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580542 (or 580539 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 120166191 is about 10962.0340721966. The cubic root of 120166191 is about 493.4700110810.

The spelling of 120166191 in words is "one hundred twenty million, one hundred sixty-six thousand, one hundred ninety-one".