11247121 has 2 divisors, whose sum is σ = 11247122. Its totient is φ = 11247120.

The previous prime is 11247109. The next prime is 11247127. The reversal of 11247121 is 12174211.

11247121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5934096 + 5313025 = 2436^2 + 2305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11247121 is a prime.

It is not a weakly prime, because it can be changed into another prime (11247127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5623560 + 5623561.

It is an arithmetic number, because the mean of its divisors is an integer number (5623561).

Almost surely, 2^11247121 is an apocalyptic number.

It is an amenable number.

11247121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11247121 is an equidigital number, since it uses as much as digits as its factorization.

11247121 is an evil number, because the sum of its binary digits is even.

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

The square root of 11247121 is about 3353.6727628080. The cubic root of 11247121 is about 224.0511216760.

The spelling of 11247121 in words is "eleven million, two hundred forty-seven thousand, one hundred twenty-one".