11212871 has 4 divisors (see below), whose sum is σ = 11219592. Its totient is φ = 11206152.

The previous prime is 11212867. The next prime is 11212913. The reversal of 11212871 is 17821211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11212871 - 2² = 11212867 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 (11212171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265 + ... + 4901.

It is an arithmetic number, because the mean of its divisors is an integer number (2804898).

Almost surely, 2^11212871 is an apocalyptic number.

11212871 is a deficient number, since it is larger than the sum of its proper divisors (6721).

11212871 is an equidigital number, since it uses as much as digits as its factorization.

11212871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720.

The product of its digits is 224, while the sum is 23.

The square root of 11212871 is about 3348.5625274138. The cubic root of 11212871 is about 223.8234618286.

The spelling of 11212871 in words is "eleven million, two hundred twelve thousand, eight hundred seventy-one".