11221140 has 48 divisors (see below), whose sum is σ = 35908992. Its totient is φ = 2564736.

The previous prime is 11221127. The next prime is 11221141. The reversal of 11221140 is 4112211.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12939 + ... + 13778.

It is an arithmetic number, because the mean of its divisors is an integer number (748104).

Almost surely, 2^11221140 is an apocalyptic number.

11221140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221140 is an abundant number, since it is smaller than the sum of its proper divisors (24687852).

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

11221140 is a wasteful number, since it uses less digits than its factorization.

11221140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26736 (or 26734 counting only the distinct ones).

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

The square root of 11221140 is about 3349.7970087753. The cubic root of 11221140 is about 223.8784683008.

Adding to 11221140 its reverse (4112211), we get a palindrome (15333351).

The spelling of 11221140 in words is "eleven million, two hundred twenty-one thousand, one hundred forty".