12009501 has 48 divisors (see below), whose sum is σ = 21299200. Its totient is φ = 6368544.

The previous prime is 12009499. The next prime is 12009521. The reversal of 12009501 is 10590021.

It is not a de Polignac number, because 12009501 - 2¹ = 12009499 is a prime.

It is a super-2 number, since 2×12009501² = 288456228538002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94500 + ... + 94626.

Almost surely, 2^12009501 is an apocalyptic number.

It is an amenable number.

12009501 is a deficient number, since it is larger than the sum of its proper divisors (9289699).

12009501 is a wasteful number, since it uses less digits than its factorization.

12009501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 12009501 is about 3465.4726950302. The cubic root of 12009501 is about 229.0032544048.

Adding to 12009501 its reverse (10590021), we get a palindrome (22599522).

It can be divided in two parts, 1200 and 9501, that added together give a palindrome (10701).

The spelling of 12009501 in words is "twelve million, nine thousand, five hundred one".