11221888 has 16 divisors (see below), whose sum is σ = 22356360. Its totient is φ = 5610880.

The previous prime is 11221883. The next prime is 11221891. The reversal of 11221888 is 88812211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221883) 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 as a sum of consecutive naturals, namely, 43708 + ... + 43963.

Almost surely, 2^11221888 is an apocalyptic number.

It is an amenable number.

11221888 is a deficient number, since it is larger than the sum of its proper divisors (11134472).

11221888 is an frugal number, since it uses more digits than its factorization.

11221888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87685 (or 87673 counting only the distinct ones).

The product of its digits is 2048, while the sum is 31.

The square root of 11221888 is about 3349.9086554711. The cubic root of 11221888 is about 223.8834427619.

The spelling of 11221888 in words is "eleven million, two hundred twenty-one thousand, eight hundred eighty-eight".