11220012 has 24 divisors (see below), whose sum is σ = 29089200. Its totient is φ = 3739968.

The previous prime is 11220007. The next prime is 11220029. The reversal of 11220012 is 21002211.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11219976 and 11220003.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51837 + ... + 52052.

It is an arithmetic number, because the mean of its divisors is an integer number (1212050).

Almost surely, 2^11220012 is an apocalyptic number.

11220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11220012 is an abundant number, since it is smaller than the sum of its proper divisors (17869188).

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

11220012 is a wasteful number, since it uses less digits than its factorization.

11220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103902 (or 103894 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 11220012 is about 3349.6286361327. The cubic root of 11220012 is about 223.8709662890.

Adding to 11220012 its reverse (21002211), we get a palindrome (32222223).

The spelling of 11220012 in words is "eleven million, two hundred twenty thousand, twelve".