11721241 has 12 divisors (see below), whose sum is σ = 13954512. Its totient is φ = 9811368.

The previous prime is 11721239. The next prime is 11721253. The reversal of 11721241 is 14212711.

11721241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11721241 - 2¹ = 11721239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11721221) 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, 675 + ... + 4888.

It is an arithmetic number, because the mean of its divisors is an integer number (1162876).

Almost surely, 2^11721241 is an apocalyptic number.

It is an amenable number.

11721241 is a deficient number, since it is larger than the sum of its proper divisors (2233271).

11721241 is an equidigital number, since it uses as much as digits as its factorization.

11721241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5620 (or 5613 counting only the distinct ones).

The product of its digits is 112, while the sum is 19.

The square root of 11721241 is about 3423.6297989123. The cubic root of 11721241 is about 227.1561669990.

Adding to 11721241 its reverse (14212711), we get a palindrome (25933952).

The spelling of 11721241 in words is "eleven million, seven hundred twenty-one thousand, two hundred forty-one".