11007421 has 2 divisors, whose sum is σ = 11007422. Its totient is φ = 11007420.

The previous prime is 11007419. The next prime is 11007433. The reversal of 11007421 is 12470011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6320196 + 4687225 = 2514^2 + 2165^2 .

It is a cyclic number.

It is not a de Polignac number, because 11007421 - 2¹ = 11007419 is a prime.

Together with 11007419, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11007395 and 11007404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11007481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5503710 + 5503711.

It is an arithmetic number, because the mean of its divisors is an integer number (5503711).

Almost surely, 2^11007421 is an apocalyptic number.

11007421 is the 1916-th hex number.

It is an amenable number.

11007421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11007421 is an equidigital number, since it uses as much as digits as its factorization.

11007421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 11007421 is about 3317.7433595744. The cubic root of 11007421 is about 222.4480104091.

Adding to 11007421 its reverse (12470011), we get a palindrome (23477432).

The spelling of 11007421 in words is "eleven million, seven thousand, four hundred twenty-one".