12118501 has 8 divisors (see below), whose sum is σ = 12965400. Its totient is φ = 11286528.

The previous prime is 12118487. The next prime is 12118529. The reversal of 12118501 is 10581121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3996001 + 8122500 = 1999^2 + 2850^2 .

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 12118501 - 2⁷ = 12118373 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 (12118591) 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, 2026 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (1620675).

Almost surely, 2^12118501 is an apocalyptic number.

It is an amenable number.

12118501 is a deficient number, since it is larger than the sum of its proper divisors (846899).

12118501 is an equidigital number, since it uses as much as digits as its factorization.

12118501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7463.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 12118501 is about 3481.1637421989. The cubic root of 12118501 is about 229.6939912800.

Adding to 12118501 its reverse (10581121), we get a palindrome (22699622).

The spelling of 12118501 in words is "twelve million, one hundred eighteen thousand, five hundred one".