11027921 has 2 divisors, whose sum is σ = 11027922. Its totient is φ = 11027920.

The previous prime is 11027911. The next prime is 11027957. The reversal of 11027921 is 12972011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7182400 + 3845521 = 2680^2 + 1961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11027921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11027911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5513960 + 5513961.

It is an arithmetic number, because the mean of its divisors is an integer number (5513961).

Almost surely, 2^11027921 is an apocalyptic number.

It is an amenable number.

11027921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11027921 is an equidigital number, since it uses as much as digits as its factorization.

11027921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 11027921 is about 3320.8313718104. The cubic root of 11027921 is about 222.5860190067.

Adding to 11027921 its reverse (12972011), we get a palindrome (23999932).

The spelling of 11027921 in words is "eleven million, twenty-seven thousand, nine hundred twenty-one".