11221122 has 64 divisors (see below), whose sum is σ = 26469504. Its totient is φ = 3133440.

The previous prime is 11221103. The next prime is 11221123. The reversal of 11221122 is 22112211.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11221098 and 11221107.

It is not an unprimeable number, because it can be changed into a prime (11221123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81838 + ... + 81974.

It is an arithmetic number, because the mean of its divisors is an integer number (413586).

Almost surely, 2^11221122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13234752).

11221122 is an abundant number, since it is smaller than the sum of its proper divisors (15248382).

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

11221122 is a wasteful number, since it uses less digits than its factorization.

11221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243.

The product of its digits is 16, while the sum is 12.

The square root of 11221122 is about 3349.7943220443. The cubic root of 11221122 is about 223.8783485918.

Adding to 11221122 its reverse (22112211), we get a palindrome (33333333).

It can be divided in two parts, 112211 and 22, that multiplied together give a palindrome (2468642).

The spelling of 11221122 in words is "eleven million, two hundred twenty-one thousand, one hundred twenty-two".