12120159 has 4 divisors (see below), whose sum is σ = 16160216. Its totient is φ = 8080104.

The previous prime is 12120091. The next prime is 12120179. The reversal of 12120159 is 95102121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95102121 = 3 ⋅31700707.

It is not a de Polignac number, because 12120159 - 2⁸ = 12119903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120179) 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, 2020024 + ... + 2020029.

It is an arithmetic number, because the mean of its divisors is an integer number (4040054).

Almost surely, 2^12120159 is an apocalyptic number.

12120159 is a deficient number, since it is larger than the sum of its proper divisors (4040057).

12120159 is an equidigital number, since it uses as much as digits as its factorization.

12120159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040056.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 12120159 is about 3481.4018728093. The cubic root of 12120159 is about 229.7044660428.

The spelling of 12120159 in words is "twelve million, one hundred twenty thousand, one hundred fifty-nine".