111111202012 has 12 divisors (see below), whose sum is σ = 195251429296. Its totient is φ = 55325079360.

The previous prime is 111111202009. The next prime is 111111202031. The reversal of 111111202012 is 210202111111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111111201983 and 111111202001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57629328 + ... + 57631255.

Almost surely, 2^111111202012 is an apocalyptic number.

It is an amenable number.

111111202012 is a deficient number, since it is larger than the sum of its proper divisors (84140227284).

111111202012 is a wasteful number, since it uses less digits than its factorization.

111111202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115260828 (or 115260826 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111111202012 its reverse (210202111111), we get a palindrome (321313313123).

Subtracting 111111202012 from its reverse (210202111111), we obtain a palindrome (99090909099).

The spelling of 111111202012 in words is "one hundred eleven billion, one hundred eleven million, two hundred two thousand, twelve".