11221051 has 2 divisors, whose sum is σ = 11221052. Its totient is φ = 11221050.

The previous prime is 11221043. The next prime is 11221061. The reversal of 11221051 is 15012211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11221051 - 2³ = 11221043 is a prime.

It is not a weakly prime, because it can be changed into another prime (11221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610525 + 5610526.

It is an arithmetic number, because the mean of its divisors is an integer number (5610526).

Almost surely, 2^11221051 is an apocalyptic number.

11221051 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221051 is an equidigital number, since it uses as much as digits as its factorization.

11221051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 11221051 is about 3349.7837243619. The cubic root of 11221051 is about 223.8778764050.

Adding to 11221051 its reverse (15012211), we get a palindrome (26233262).

The spelling of 11221051 in words is "eleven million, two hundred twenty-one thousand, fifty-one".