1011111112 has 32 divisors (see below), whose sum is σ = 2102097600. Its totient is φ = 452059200.

The previous prime is 1011111083. The next prime is 1011111133. The reversal of 1011111112 is 2111111101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88812 + ... + 99547.

It is an arithmetic number, because the mean of its divisors is an integer number (65690550).

Almost surely, 2^1011111112 is an apocalyptic number.

It is an amenable number.

1011111112 is an abundant number, since it is smaller than the sum of its proper divisors (1090986488).

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

1011111112 is a wasteful number, since it uses less digits than its factorization.

1011111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188437 (or 188433 counting only the distinct ones).

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

The square root of 1011111112 is about 31797.9733945420. The cubic root of 1011111112 is about 1003.6900706300.

Adding to 1011111112 its reverse (2111111101), we get a palindrome (3122222213).

The spelling of 1011111112 in words is "one billion, eleven million, one hundred eleven thousand, one hundred twelve".