111212210221122 has 8 divisors (see below), whose sum is σ = 222424420442256. Its totient is φ = 37070736740372.

The previous prime is 111212210221019. The next prime is 111212210221129. The reversal of 111212210221122 is 221122012212111.

It is a sphenic number, since it is the product of 3 distinct primes.

111212210221122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (111212210221129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9267684185088 + ... + 9267684185099.

It is an arithmetic number, because the mean of its divisors is an integer number (27803052555282).

Almost surely, 2^{111212210221122} is an apocalyptic number.

111212210221122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111212210221122 is a wasteful number, since it uses less digits than its factorization.

111212210221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18535368370192.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111212210221122 its reverse (221122012212111), we get a palindrome (332334222433233).

The spelling of 111212210221122 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty-two".