11222556 has 12 divisors (see below), whose sum is σ = 26185992. Its totient is φ = 3740848.

The previous prime is 11222539. The next prime is 11222573. The reversal of 11222556 is 65522211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11222539) and next prime (11222573).

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 467595 + ... + 467618.

It is an arithmetic number, because the mean of its divisors is an integer number (2182166).

Almost surely, 2^11222556 is an apocalyptic number.

It is an amenable number.

11222556 is an abundant number, since it is smaller than the sum of its proper divisors (14963436).

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

11222556 is a wasteful number, since it uses less digits than its factorization.

11222556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935220 (or 935218 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 11222556 is about 3350.0083581985. The cubic root of 11222556 is about 223.8878850083.

Adding to 11222556 its reverse (65522211), we get a palindrome (76744767).

The spelling of 11222556 in words is "eleven million, two hundred twenty-two thousand, five hundred fifty-six".