111101101221212 has 12 divisors (see below), whose sum is σ = 194455406301240. Its totient is φ = 55542413706576.

The previous prime is 111101101221199. The next prime is 111101101221223. The reversal of 111101101221212 is 212122101101111.

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, 2034195287 + ... + 2034249902.

It is an arithmetic number, because the mean of its divisors is an integer number (16204617191770).

Almost surely, 2^{111101101221212} is an apocalyptic number.

It is an amenable number.

111101101221212 is a deficient number, since it is larger than the sum of its proper divisors (83354305080028).

111101101221212 is a wasteful number, since it uses less digits than its factorization.

111101101221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068452020 (or 4068452018 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111101101221212 its reverse (212122101101111), we get a palindrome (323223202322323).

The spelling of 111101101221212 in words is "one hundred eleven trillion, one hundred one billion, one hundred one million, two hundred twenty-one thousand, two hundred twelve".