111201222111212 has 12 divisors (see below), whose sum is σ = 196387479417360. Its totient is φ = 55090513706256.

The previous prime is 111201222111167. The next prime is 111201222111227. The reversal of 111201222111212 is 212111222102111.

It is a happy number.

It is a super-2 number, since 2×111201222111212² (a number of 29 digits) contains 22 as substring.

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, 127524336848 + ... + 127524337719.

It is an arithmetic number, because the mean of its divisors is an integer number (16365623284780).

Almost surely, 2^{111201222111212} is an apocalyptic number.

It is an amenable number.

111201222111212 is a deficient number, since it is larger than the sum of its proper divisors (85186257306148).

111201222111212 is a wasteful number, since it uses less digits than its factorization.

111201222111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255048674680 (or 255048674678 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111201222111212 its reverse (212111222102111), we get a palindrome (323312444213323).

The spelling of 111201222111212 in words is "one hundred eleven trillion, two hundred one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twelve".