11216887 has 4 divisors (see below), whose sum is σ = 12236616. Its totient is φ = 10197160.

The previous prime is 11216861. The next prime is 11216911. The reversal of 11216887 is 78861211.

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

It is a cyclic number.

It is not a de Polignac number, because 11216887 - 2¹⁹ = 10692599 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 (11216087) 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, 509848 + ... + 509869.

It is an arithmetic number, because the mean of its divisors is an integer number (3059154).

Almost surely, 2^11216887 is an apocalyptic number.

11216887 is a deficient number, since it is larger than the sum of its proper divisors (1019729).

11216887 is a wasteful number, since it uses less digits than its factorization.

11216887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019728.

The product of its digits is 5376, while the sum is 34.

The square root of 11216887 is about 3349.1621340270. The cubic root of 11216887 is about 223.8501801636.

It can be divided in two parts, 1121 and 6887, that added together give a palindrome (8008).

The spelling of 11216887 in words is "eleven million, two hundred sixteen thousand, eight hundred eighty-seven".