111211202122012 has 12 divisors (see below), whose sum is σ = 194960443653976. Its totient is φ = 55508218220880.

The previous prime is 111211202122001. The next prime is 111211202122019. The reversal of 111211202122012 is 210221202112111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211202122019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24345707463 + ... + 24345712030.

Almost surely, 2^{111211202122012} is an apocalyptic number.

It is an amenable number.

111211202122012 is a deficient number, since it is larger than the sum of its proper divisors (83749241531964).

111211202122012 is a wasteful number, since it uses less digits than its factorization.

111211202122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48691420068 (or 48691420066 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111211202122012 its reverse (210221202112111), we get a palindrome (321432404234123).

Subtracting 111211202122012 from its reverse (210221202112111), we obtain a palindrome (99009999990099).

The spelling of 111211202122012 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred two million, one hundred twenty-two thousand, twelve".