11215212 has 24 divisors (see below), whose sum is σ = 26233536. Its totient is φ = 3729168.

The previous prime is 11215207. The next prime is 11215213. The reversal of 11215212 is 21251211.

It is a junction number, because it is equal to n+sod(n) for n = 11215191 and 11215200.

It is not an unprimeable number, because it can be changed into a prime (11215213) 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 7 ways as a sum of consecutive naturals, for example, 5383 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (1093064).

Almost surely, 2^11215212 is an apocalyptic number.

11215212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11215212 is an abundant number, since it is smaller than the sum of its proper divisors (15018324).

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

11215212 is a wasteful number, since it uses less digits than its factorization.

11215212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317 (or 2315 counting only the distinct ones).

The product of its digits is 40, while the sum is 15.

The square root of 11215212 is about 3348.9120621479. The cubic root of 11215212 is about 223.8390372111.

Adding to 11215212 its reverse (21251211), we get a palindrome (32466423).

The spelling of 11215212 in words is "eleven million, two hundred fifteen thousand, two hundred twelve".