11212287 has 8 divisors (see below), whose sum is σ = 14977536. Its totient is φ = 7460952.

The previous prime is 11212283. The next prime is 11212291. The reversal of 11212287 is 78221211.

It is an interprime number because it is at equal distance from previous prime (11212283) and next prime (11212291).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11212287 - 2² = 11212283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423 + ... + 4944.

It is an arithmetic number, because the mean of its divisors is an integer number (1872192).

Almost surely, 2^11212287 is an apocalyptic number.

11212287 is a deficient number, since it is larger than the sum of its proper divisors (3765249).

11212287 is an equidigital number, since it uses as much as digits as its factorization.

11212287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6957.

The product of its digits is 448, while the sum is 24.

The square root of 11212287 is about 3348.4753246814. The cubic root of 11212287 is about 223.8195759617.

Adding to 11212287 its reverse (78221211), we get a palindrome (89433498).

The spelling of 11212287 in words is "eleven million, two hundred twelve thousand, two hundred eighty-seven".