111212202202212 has 12 divisors (see below), whose sum is σ = 259495138471856. Its totient is φ = 37070734067400.

The previous prime is 111212202202187. The next prime is 111212202202217. The reversal of 111212202202212 is 212202202212111.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (111212202202217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4633841758414 + ... + 4633841758437.

Almost surely, 2^{111212202202212} is an apocalyptic number.

111212202202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111212202202212 is an abundant number, since it is smaller than the sum of its proper divisors (148282936269644).

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

111212202202212 is a wasteful number, since it uses less digits than its factorization.

111212202202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9267683516858 (or 9267683516856 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 111212202202212 its reverse (212202202212111), we get a palindrome (323414404414323).

It can be divided in two parts, 111 and 212202202212, that multiplied together give a palindrome (23554444445532).

The spelling of 111212202202212 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred two million, two hundred two thousand, two hundred twelve".