1121445012 has 24 divisors (see below), whose sum is σ = 2617437312. Its totient is φ = 373710400.

The previous prime is 1121445007. The next prime is 1121445023. The reversal of 1121445012 is 2105441211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121445012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40312 + ... + 62192.

It is an arithmetic number, because the mean of its divisors is an integer number (109059888).

Almost surely, 2^1121445012 is an apocalyptic number.

1121445012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121445012 is an abundant number, since it is smaller than the sum of its proper divisors (1495992300).

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

1121445012 is a wasteful number, since it uses less digits than its factorization.

1121445012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26159 (or 26157 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1121445012 is about 33487.9830984191. The cubic root of 1121445012 is about 1038.9452484501.

Adding to 1121445012 its reverse (2105441211), we get a palindrome (3226886223).

The spelling of 1121445012 in words is "one billion, one hundred twenty-one million, four hundred forty-five thousand, twelve".