12081501 has 8 divisors (see below), whose sum is σ = 17898560. Its totient is φ = 8054316.

The previous prime is 12081497. The next prime is 12081523. The reversal of 12081501 is 10518021.

It is not a de Polignac number, because 12081501 - 2² = 12081497 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 (12081541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223705 + ... + 223758.

It is an arithmetic number, because the mean of its divisors is an integer number (2237320).

Almost surely, 2^12081501 is an apocalyptic number.

It is an amenable number.

12081501 is a deficient number, since it is larger than the sum of its proper divisors (5817059).

12081501 is an equidigital number, since it uses as much as digits as its factorization.

12081501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447472 (or 447466 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 12081501 is about 3475.8453647998. The cubic root of 12081501 is about 229.4599870436.

Adding to 12081501 its reverse (10518021), we get a palindrome (22599522).

The spelling of 12081501 in words is "twelve million, eighty-one thousand, five hundred one".