11220128 has 12 divisors (see below), whose sum is σ = 22089690. Its totient is φ = 5610048.

The previous prime is 11220107. The next prime is 11220137. The reversal of 11220128 is 82102211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10163344 + 1056784 = 3188^2 + 1028^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175283 + ... + 175346.

Almost surely, 2^11220128 is an apocalyptic number.

It is an amenable number.

11220128 is a deficient number, since it is larger than the sum of its proper divisors (10869562).

11220128 is an equidigital number, since it uses as much as digits as its factorization.

11220128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350639 (or 350631 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 11220128 is about 3349.6459514402. The cubic root of 11220128 is about 223.8717377957.

Adding to 11220128 its reverse (82102211), we get a palindrome (93322339).

The spelling of 11220128 in words is "eleven million, two hundred twenty thousand, one hundred twenty-eight".