11215422 has 48 divisors (see below), whose sum is σ = 25788672. Its totient is φ = 3651480.

The previous prime is 11215411. The next prime is 11215439. The reversal of 11215422 is 22451211.

11215422 is a `hidden beast` number, since 1 + 121 + 542 + 2 = 666.

11215422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11215395 and 11215404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22597 + ... + 23087.

It is an arithmetic number, because the mean of its divisors is an integer number (537264).

Almost surely, 2^11215422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11215422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12894336).

11215422 is an abundant number, since it is smaller than the sum of its proper divisors (14573250).

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

11215422 is an equidigital number, since it uses as much as digits as its factorization.

11215422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 543 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 11215422 is about 3348.9434154670. The cubic root of 11215422 is about 223.8404342988.

Adding to 11215422 its reverse (22451211), we get a palindrome (33666633).

The spelling of 11215422 in words is "eleven million, two hundred fifteen thousand, four hundred twenty-two".