111111011212 has 24 divisors (see below), whose sum is σ = 205893848160. Its totient is φ = 52284568320.

The previous prime is 111111011203. The next prime is 111111011279. The reversal of 111111011212 is 212110111111.

It is a junction number, because it is equal to n+sod(n) for n = 111111011192 and 111111011201.

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, 1575114 + ... + 1644142.

It is an arithmetic number, because the mean of its divisors is an integer number (8578910340).

Almost surely, 2^111111011212 is an apocalyptic number.

It is an amenable number.

111111011212 is a deficient number, since it is larger than the sum of its proper divisors (94782836948).

111111011212 is a wasteful number, since it uses less digits than its factorization.

111111011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92721 (or 92719 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111111011212 its reverse (212110111111), we get a palindrome (323221122323).

The spelling of 111111011212 in words is "one hundred eleven billion, one hundred eleven million, eleven thousand, two hundred twelve".