12015601 has 8 divisors (see below), whose sum is σ = 13009640. Its totient is φ = 11031552.

The previous prime is 12015589. The next prime is 12015611. The reversal of 12015601 is 10651021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 462400 + 11553201 = 680^2 + 3399^2 .

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 12015601 - 2⁷ = 12015473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12015611) 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, 115 + ... + 4903.

It is an arithmetic number, because the mean of its divisors is an integer number (1626205).

Almost surely, 2^12015601 is an apocalyptic number.

It is an amenable number.

12015601 is a deficient number, since it is larger than the sum of its proper divisors (994039).

12015601 is a wasteful number, since it uses less digits than its factorization.

12015601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 12015601 is about 3466.3526941152. The cubic root of 12015601 is about 229.0420204730.

Adding to 12015601 its reverse (10651021), we get a palindrome (22666622).

The spelling of 12015601 in words is "twelve million, fifteen thousand, six hundred one".