12211404 has 12 divisors (see below), whose sum is σ = 28493304. Its totient is φ = 4070464.

The previous prime is 12211403. The next prime is 12211421. The reversal of 12211404 is 40411221.

12211404 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (12211403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508797 + ... + 508820.

It is an arithmetic number, because the mean of its divisors is an integer number (2374442).

Almost surely, 2^12211404 is an apocalyptic number.

It is an amenable number.

12211404 is an abundant number, since it is smaller than the sum of its proper divisors (16281900).

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

12211404 is a wasteful number, since it uses less digits than its factorization.

12211404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017624 (or 1017622 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 12211404 is about 3494.4819358526. The cubic root of 12211404 is about 230.2794586713.

Adding to 12211404 its reverse (40411221), we get a palindrome (52622625).

The spelling of 12211404 in words is "twelve million, two hundred eleven thousand, four hundred four".