1011111001112 has 16 divisors (see below), whose sum is σ = 1900608531360. Its totient is φ = 504282059424.

The previous prime is 1011111001099. The next prime is 1011111001129. The reversal of 1011111001112 is 2111001111101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1011111001093 and 1011111001102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159176768 + ... + 159183119.

It is an arithmetic number, because the mean of its divisors is an integer number (118788033210).

Almost surely, 2^{1011111001112} is an apocalyptic number.

It is an amenable number.

1011111001112 is a deficient number, since it is larger than the sum of its proper divisors (889497530248).

1011111001112 is a wasteful number, since it uses less digits than its factorization.

1011111001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318360290 (or 318360286 counting only the distinct ones).

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

Adding to 1011111001112 its reverse (2111001111101), we get a palindrome (3122112112213).

The spelling of 1011111001112 in words is "one trillion, eleven billion, one hundred eleven million, one thousand, one hundred twelve".