11212231 has 8 divisors (see below), whose sum is σ = 11917584. Its totient is φ = 10512000.

The previous prime is 11212219. The next prime is 11212237. The reversal of 11212231 is 13221211.

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

It is a cyclic number.

It is not a de Polignac number, because 11212231 - 2¹⁵ = 11179463 is a prime.

It is a super-2 number, since 2×11212231² = 251428247994722, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3856 + ... + 6106.

It is an arithmetic number, because the mean of its divisors is an integer number (1489698).

Almost surely, 2^11212231 is an apocalyptic number.

11212231 is a deficient number, since it is larger than the sum of its proper divisors (705353).

11212231 is a wasteful number, since it uses less digits than its factorization.

11212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its digits is 24, while the sum is 13.

The square root of 11212231 is about 3348.4669626562. The cubic root of 11212231 is about 223.8192033373.

Adding to 11212231 its reverse (13221211), we get a palindrome (24433442).

The spelling of 11212231 in words is "eleven million, two hundred twelve thousand, two hundred thirty-one".