11821422 has 8 divisors (see below), whose sum is σ = 23642856. Its totient is φ = 3940472.

The previous prime is 11821399. The next prime is 11821427. The reversal of 11821422 is 22412811.

11821422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

11821422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11821427) 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, 985113 + ... + 985124.

It is an arithmetic number, because the mean of its divisors is an integer number (2955357).

Almost surely, 2^11821422 is an apocalyptic number.

11821422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11821422 is a wasteful number, since it uses less digits than its factorization.

11821422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970242.

The product of its digits is 256, while the sum is 21.

The square root of 11821422 is about 3438.2294862327. The cubic root of 11821422 is about 227.8014969725.

The spelling of 11821422 in words is "eleven million, eight hundred twenty-one thousand, four hundred twenty-two".