111101101111212 has 48 divisors (see below), whose sum is σ = 266538651316224. Its totient is φ = 35997116688000.

The previous prime is 111101101111139. The next prime is 111101101111241. The reversal of 111101101111212 is 212111101101111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111101101111191 and 111101101111200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416499964 + ... + 416766627.

It is an arithmetic number, because the mean of its divisors is an integer number (5552888569088).

Almost surely, 2^{111101101111212} is an apocalyptic number.

111101101111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111101101111212 is an abundant number, since it is smaller than the sum of its proper divisors (155437550205012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111101101111212 is a wasteful number, since it uses less digits than its factorization.

111101101111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833266910 (or 833266908 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111101101111212 its reverse (212111101101111), we get a palindrome (323212202212323).

It can be divided in two parts, 111101101111 and 212, that multiplied together give a palindrome (23553433435532).

The spelling of 111101101111212 in words is "one hundred eleven trillion, one hundred one billion, one hundred one million, one hundred eleven thousand, two hundred twelve".