1011111110012 has 12 divisors (see below), whose sum is σ = 1769514253416. Its totient is φ = 505535609040.

The previous prime is 1011111110011. The next prime is 1011111110041. The reversal of 1011111110012 is 2100111111101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1011111109975 and 1011111110002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011111110011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4872143 + ... + 5075430.

It is an arithmetic number, because the mean of its divisors is an integer number (147459521118).

Almost surely, 2^{1011111110012} is an apocalyptic number.

It is an amenable number.

1011111110012 is a deficient number, since it is larger than the sum of its proper divisors (758403143404).

1011111110012 is a wasteful number, since it uses less digits than its factorization.

1011111110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9972988 (or 9972986 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1011111110012 its reverse (2100111111101), we get a palindrome (3111222221113).

The spelling of 1011111110012 in words is "one trillion, eleven billion, one hundred eleven million, one hundred ten thousand, twelve".