111111117222222 has 64 divisors (see below), whose sum is σ = 265908929536320. Its totient is φ = 34187781196800.

The previous prime is 111111117222199. The next prime is 111111117222241. The reversal of 111111117222222 is 222222711111111.

111111117222222 is digitally balanced in base 3, 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 (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107820522 + ... + 108846162.

It is an arithmetic number, because the mean of its divisors is an integer number (4154827024005).

Almost surely, 2^{111111117222222} is an apocalyptic number.

111111117222222 is an abundant number, since it is smaller than the sum of its proper divisors (154797812314098).

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

111111117222222 is a wasteful number, since it uses less digits than its factorization.

111111117222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179986 (or 1179980 counting only the distinct ones).

The product of its digits is 448, while the sum is 27.

Adding to 111111117222222 its reverse (222222711111111), we get a palindrome (333333828333333).

The spelling of 111111117222222 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred seventeen million, two hundred twenty-two thousand, two hundred twenty-two".