1111001012 has 24 divisors (see below), whose sum is σ = 2127804672. Its totient is φ = 503380800.

The previous prime is 1111000997. The next prime is 1111001027. The reversal of 1111001012 is 2101001111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1111000997) and next prime (1111001027).

It is a congruent number.

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, 26564 + ... + 54107.

It is an arithmetic number, because the mean of its divisors is an integer number (88658528).

Almost surely, 2^1111001012 is an apocalyptic number.

It is an amenable number.

1111001012 is a deficient number, since it is larger than the sum of its proper divisors (1016803660).

1111001012 is a wasteful number, since it uses less digits than its factorization.

1111001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80999 (or 80997 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1111001012 is about 33331.6818057535. The cubic root of 1111001012 is about 1035.7099571676.

Adding to 1111001012 its reverse (2101001111), we get a palindrome (3212002123).

Subtracting 1111001012 from its reverse (2101001111), we obtain a palindrome (990000099).

The spelling of 1111001012 in words is "one billion, one hundred eleven million, one thousand, twelve".