111111120012222 has 48 divisors (see below), whose sum is σ = 262626993029232. Its totient is φ = 33669945423360.

The previous prime is 111111120012163. The next prime is 111111120012251. The reversal of 111111120012222 is 222210021111111.

It is a happy number.

111111120012222 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111111120012195 and 111111120012204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126877038 + ... + 127749774.

It is an arithmetic number, because the mean of its divisors is an integer number (5471395688109).

Almost surely, 2^{111111120012222} is an apocalyptic number.

111111120012222 is an abundant number, since it is smaller than the sum of its proper divisors (151515873017010).

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

111111120012222 is a wasteful number, since it uses less digits than its factorization.

111111120012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515753 (or 1515750 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111111120012222 its reverse (222210021111111), we get a palindrome (333321141123333).

The spelling of 111111120012222 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty million, twelve thousand, two hundred twenty-two".