11221087 has 2 divisors, whose sum is σ = 11221088. Its totient is φ = 11221086.

The previous prime is 11221069. The next prime is 11221097. The reversal of 11221087 is 78012211.

It is a strong prime.

It is an emirp because it is prime and its reverse (78012211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11221087 - 2¹⁹ = 10696799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610543 + 5610544.

It is an arithmetic number, because the mean of its divisors is an integer number (5610544).

Almost surely, 2^11221087 is an apocalyptic number.

11221087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221087 is an equidigital number, since it uses as much as digits as its factorization.

11221087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 11221087 is about 3349.7890978388. The cubic root of 11221087 is about 223.8781158239.

Adding to 11221087 its reverse (78012211), we get a palindrome (89233298).

It can be divided in two parts, 1122 and 1087, that added together give a square (2209 = 47²).

The spelling of 11221087 in words is "eleven million, two hundred twenty-one thousand, eighty-seven".