111111010021222 has 16 divisors (see below), whose sum is σ = 166718907932832. Its totient is φ = 55538041893120.

The previous prime is 111111010021213. The next prime is 111111010021229. The reversal of 111111010021222 is 222120010111111.

It is a junction number, because it is equal to n+sod(n) for n = 111111010021196 and 111111010021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111010021229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197977588 + ... + 198538024.

It is an arithmetic number, because the mean of its divisors is an integer number (10419931745802).

Almost surely, 2^{111111010021222} is an apocalyptic number.

111111010021222 is a deficient number, since it is larger than the sum of its proper divisors (55607897911610).

111111010021222 is a wasteful number, since it uses less digits than its factorization.

111111010021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591423.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111111010021222 its reverse (222120010111111), we get a palindrome (333231020132333).

The spelling of 111111010021222 in words is "one hundred eleven trillion, one hundred eleven billion, ten million, twenty-one thousand, two hundred twenty-two".