11421212 has 24 divisors (see below), whose sum is σ = 23088240. Its totient is φ = 4885760.

The previous prime is 11421211. The next prime is 11421233. The reversal of 11421212 is 21212411.

It is a happy number.

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 (11421211) 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, 6887 + ... + 8382.

It is an arithmetic number, because the mean of its divisors is an integer number (962010).

Almost surely, 2^11421212 is an apocalyptic number.

It is an amenable number.

11421212 is an abundant number, since it is smaller than the sum of its proper divisors (11667028).

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

11421212 is a wasteful number, since it uses less digits than its factorization.

11421212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15301 (or 15299 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 11421212 is about 3379.5283694622. The cubic root of 11421212 is about 225.2012158852.

Adding to 11421212 its reverse (21212411), we get a palindrome (32633623).

The spelling of 11421212 in words is "eleven million, four hundred twenty-one thousand, two hundred twelve".