1011111001012 has 48 divisors (see below), whose sum is σ = 2072054723200. Its totient is φ = 431535081600.

The previous prime is 1011111001003. The next prime is 1011111001027. The reversal of 1011111001012 is 2101001111101.

It is a self number, because there is not a number n which added to its sum of digits gives 1011111001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198314 + ... + 1859617.

Almost surely, 2^{1011111001012} is an apocalyptic number.

It is an amenable number.

1011111001012 is an abundant number, since it is smaller than the sum of its proper divisors (1060943722188).

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

1011111001012 is a wasteful number, since it uses less digits than its factorization.

1011111001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058197 (or 3058181 counting only the distinct ones).

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

Adding to 1011111001012 its reverse (2101001111101), we get a palindrome (3112112112113).

The spelling of 1011111001012 in words is "one trillion, eleven billion, one hundred eleven million, one thousand, twelve".