11213212 has 6 divisors (see below), whose sum is σ = 19623128.
Its totient is φ = 5606604.
The previous prime is 11213201. The next prime is 11213219. The reversal of 11213212 is 21231211.
11213212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×112132122 = 251472246713888, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 11213192 and 11213201.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (11213219) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401648 + ... + 1401655.
Almost surely, 211213212 is an apocalyptic number.
It is an amenable number.
11213212 is a deficient number, since it is larger than the sum of its proper divisors (8409916).
11213212 is a wasteful number, since it uses less digits than its factorization.
11213212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2803307 (or 2803305 counting only the distinct ones).
The product of its digits is 24, while the sum is 13.
The square root of 11213212 is about 3348.6134443975.
The cubic root of 11213212 is about 223.8257307398.
Adding to 11213212 its reverse (21231211), we get a palindrome (32444423).
The spelling of 11213212 in words is "eleven million, two hundred thirteen thousand, two hundred twelve".