11217612 has 24 divisors (see below), whose sum is σ = 29913856. Its totient is φ = 3205008.

The previous prime is 11217601. The next prime is 11217617. The reversal of 11217612 is 21671211.

It is a happy number.

11217612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11217617) 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, 66688 + ... + 66855.

Almost surely, 2^11217612 is an apocalyptic number.

11217612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11217612 is an abundant number, since it is smaller than the sum of its proper divisors (18696244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11217612 is a wasteful number, since it uses less digits than its factorization.

11217612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133557 (or 133555 counting only the distinct ones).

The product of its digits is 168, while the sum is 21.

The square root of 11217612 is about 3349.2703683041. The cubic root of 11217612 is about 223.8550028886.

Adding to 11217612 its reverse (21671211), we get a palindrome (32888823).

The spelling of 11217612 in words is "eleven million, two hundred seventeen thousand, six hundred twelve".