12180961 has 8 divisors (see below), whose sum is σ = 13688640. Its totient is φ = 10754832.

The previous prime is 12180947. The next prime is 12180967. The reversal of 12180961 is 16908121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12180961 - 2¹¹ = 12178913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12180967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20071 + ... + 20668.

It is an arithmetic number, because the mean of its divisors is an integer number (1711080).

Almost surely, 2^12180961 is an apocalyptic number.

It is an amenable number.

12180961 is a deficient number, since it is larger than the sum of its proper divisors (1507679).

12180961 is a wasteful number, since it uses less digits than its factorization.

12180961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40775.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 12180961 is about 3490.1233502557. The cubic root of 12180961 is about 230.0879373885.

The spelling of 12180961 in words is "twelve million, one hundred eighty thousand, nine hundred sixty-one".