11211087 has 4 divisors (see below), whose sum is σ = 14948120. Its totient is φ = 7474056.

The previous prime is 11211077. The next prime is 11211091. The reversal of 11211087 is 78011211.

11211087 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11211087 - 2⁴ = 11211071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868512 + ... + 1868517.

It is an arithmetic number, because the mean of its divisors is an integer number (3737030).

Almost surely, 2^11211087 is an apocalyptic number.

11211087 is a deficient number, since it is larger than the sum of its proper divisors (3737033).

11211087 is an equidigital number, since it uses as much as digits as its factorization.

11211087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737032.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 11211087 is about 3348.2961338567. The cubic root of 11211087 is about 223.8115908803.

Adding to 11211087 its reverse (78011211), we get a palindrome (89222298).

The spelling of 11211087 in words is "eleven million, two hundred eleven thousand, eighty-seven".