111111122022212 has 24 divisors (see below), whose sum is σ = 216156624483072. Its totient is φ = 49627796436000.

The previous prime is 111111122022163. The next prime is 111111122022247. The reversal of 111111122022212 is 212220221111111.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34463745914 + ... + 34463749137.

It is an arithmetic number, because the mean of its divisors is an integer number (9006526020128).

Almost surely, 2^{111111122022212} is an apocalyptic number.

It is an amenable number.

111111122022212 is a deficient number, since it is larger than the sum of its proper divisors (105045502460860).

111111122022212 is a wasteful number, since it uses less digits than its factorization.

111111122022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68927495099 (or 68927495097 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111111122022212 its reverse (212220221111111), we get a palindrome (323331343133323).

The spelling of 111111122022212 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty-two million, twenty-two thousand, two hundred twelve".