11042220 has 96 divisors (see below), whose sum is σ = 35997696. Its totient is φ = 2476800.

The previous prime is 11042209. The next prime is 11042221. The reversal of 11042220 is 2224011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11042196 and 11042205.

It is not an unprimeable number, because it can be changed into a prime (11042221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25405 + ... + 25835.

It is an arithmetic number, because the mean of its divisors is an integer number (374976).

Almost surely, 2^11042220 is an apocalyptic number.

11042220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11042220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17998848).

11042220 is an abundant number, since it is smaller than the sum of its proper divisors (24955476).

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

11042220 is a wasteful number, since it uses less digits than its factorization.

11042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 11042220 is about 3322.9835991169. The cubic root of 11042220 is about 222.6821804642.

Adding to 11042220 its reverse (2224011), we get a palindrome (13266231).

The spelling of 11042220 in words is "eleven million, forty-two thousand, two hundred twenty".