1111111012 has 24 divisors (see below), whose sum is σ = 2122233120. Its totient is φ = 504807360.

The previous prime is 1111110989. The next prime is 1111111031. The reversal of 1111111012 is 2101111111.

It is a self number, because there is not a number n which added to its sum of digits gives 1111111012.

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 7 ways as a sum of consecutive naturals, for example, 112248 + ... + 121744.

It is an arithmetic number, because the mean of its divisors is an integer number (88426380).

Almost surely, 2^1111111012 is an apocalyptic number.

It is an amenable number.

1111111012 is a deficient number, since it is larger than the sum of its proper divisors (1011122108).

1111111012 is a wasteful number, since it uses less digits than its factorization.

1111111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171 (or 12169 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 10.

The square root of 1111111012 is about 33333.3318466666. The cubic root of 1111111012 is about 1035.7441378552.

Adding to 1111111012 its reverse (2101111111), we get a palindrome (3212222123).

Subtracting 1111111012 from its reverse (2101111111), we obtain a palindrome (990000099).

The spelling of 1111111012 in words is "one billion, one hundred eleven million, one hundred eleven thousand, twelve".