111011111012 has 24 divisors (see below), whose sum is σ = 202814551296. Its totient is φ = 53066444288.

The previous prime is 111011110999. The next prime is 111011111017. The reversal of 111011111012 is 210111110111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111011110984 and 111011111002.

It is not an unprimeable number, because it can be changed into a prime (111011111017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102653 + ... + 482244.

It is an arithmetic number, because the mean of its divisors is an integer number (8450606304).

Almost surely, 2^111011111012 is an apocalyptic number.

It is an amenable number.

111011111012 is a deficient number, since it is larger than the sum of its proper divisors (91803440284).

111011111012 is a wasteful number, since it uses less digits than its factorization.

111011111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586987 (or 586985 counting only the distinct ones).

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

Adding to 111011111012 its reverse (210111110111), we get a palindrome (321122221123).

Subtracting 111011111012 from its reverse (210111110111), we obtain a palindrome (99099999099).

The spelling of 111011111012 in words is "one hundred eleven billion, eleven million, one hundred eleven thousand, twelve".