111201221212 has 12 divisors (see below), whose sum is σ = 194605202680. Its totient is φ = 55599734736.

The previous prime is 111201221191. The next prime is 111201221231. The reversal of 111201221212 is 212122102111.

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, 127663 + ... + 488569.

Almost surely, 2^111201221212 is an apocalyptic number.

It is an amenable number.

111201221212 is a deficient number, since it is larger than the sum of its proper divisors (83403981468).

111201221212 is a wasteful number, since it uses less digits than its factorization.

111201221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437940 (or 437938 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111201221212 its reverse (212122102111), we get a palindrome (323323323323).

The spelling of 111201221212 in words is "one hundred eleven billion, two hundred one million, two hundred twenty-one thousand, two hundred twelve".