11411921 has 2 divisors, whose sum is σ = 11411922. Its totient is φ = 11411920.

The previous prime is 11411893. The next prime is 11411923. The reversal of 11411921 is 12911411.

11411921 is digitally balanced in base 3, 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., 11296321 + 115600 = 3361^2 + 340^2 .

It is an emirp because it is prime and its reverse (12911411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11411921 - 2⁶ = 11411857 is a prime.

Together with 11411923, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11411893 and 11411902.

It is not a weakly prime, because it can be changed into another prime (11411923) 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 as a sum of consecutive naturals, namely, 5705960 + 5705961.

It is an arithmetic number, because the mean of its divisors is an integer number (5705961).

Almost surely, 2^11411921 is an apocalyptic number.

It is an amenable number.

11411921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11411921 is an equidigital number, since it uses as much as digits as its factorization.

11411921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 20.

The square root of 11411921 is about 3378.1534897041. The cubic root of 11411921 is about 225.1401332810.

The spelling of 11411921 in words is "eleven million, four hundred eleven thousand, nine hundred twenty-one".