12011247 has 12 divisors (see below), whose sum is σ = 17992520. Its totient is φ = 8007336.

The previous prime is 12011243. The next prime is 12011257. The reversal of 12011247 is 74211021.

It is not a de Polignac number, because 12011247 - 2² = 12011243 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 (12011243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24472 + ... + 24957.

Almost surely, 2^12011247 is an apocalyptic number.

12011247 is a deficient number, since it is larger than the sum of its proper divisors (5981273).

12011247 is an frugal number, since it uses more digits than its factorization.

12011247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49444 (or 49432 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 12011247 is about 3465.7245995607. The cubic root of 12011247 is about 229.0143517381.

Adding to 12011247 its reverse (74211021), we get a palindrome (86222268).

The spelling of 12011247 in words is "twelve million, eleven thousand, two hundred forty-seven".