1111312012 has 12 divisors (see below), whose sum is σ = 1947004696. Its totient is φ = 555024960.

The previous prime is 1111312009. The next prime is 1111312019. The reversal of 1111312012 is 2102131111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1111311983 and 1111312001.

It is not an unprimeable number, because it can be changed into a prime (1111312019) by changing a digit.

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, 153789 + ... + 160852.

Almost surely, 2^1111312012 is an apocalyptic number.

It is an amenable number.

1111312012 is a deficient number, since it is larger than the sum of its proper divisors (835692684).

1111312012 is a wasteful number, since it uses less digits than its factorization.

1111312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315528 (or 315526 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1111312012 is about 33336.3467104600. The cubic root of 1111312012 is about 1035.8065894666.

Adding to 1111312012 its reverse (2102131111), we get a palindrome (3213443123).

The spelling of 1111312012 in words is "one billion, one hundred eleven million, three hundred twelve thousand, twelve".