1111220012 has 12 divisors (see below), whose sum is σ = 2222440080. Its totient is φ = 476237136.

The previous prime is 1111220009. The next prime is 1111220021. The reversal of 1111220012 is 2100221111.

1111220012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1111219975 and 1111220002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19843187 + ... + 19843242.

It is an arithmetic number, because the mean of its divisors is an integer number (185203340).

Almost surely, 2^1111220012 is an apocalyptic number.

It is an amenable number.

1111220012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1111220012 is a wasteful number, since it uses less digits than its factorization.

1111220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39686440 (or 39686438 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1111220012 is about 33334.9668066431. The cubic root of 1111220012 is about 1035.7780055840.

Adding to 1111220012 its reverse (2100221111), we get a palindrome (3211441123).

The spelling of 1111220012 in words is "one billion, one hundred eleven million, two hundred twenty thousand, twelve".