111222120012222 has 16 divisors (see below), whose sum is σ = 222464475236880. Its totient is φ = 37070667468672.

The previous prime is 111222120012193. The next prime is 111222120012229. The reversal of 111222120012222 is 222210021222111.

It is a super-2 number, since 2×111222120012222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222120012229) 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, 843062397 + ... + 843194312.

It is an arithmetic number, because the mean of its divisors is an integer number (13904029702305).

Almost surely, 2^{111222120012222} is an apocalyptic number.

111222120012222 is an abundant number, since it is smaller than the sum of its proper divisors (111242355224658).

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

111222120012222 is a wasteful number, since it uses less digits than its factorization.

111222120012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686267707.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 111222120012222 its reverse (222210021222111), we get a palindrome (333432141234333).

The spelling of 111222120012222 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty million, twelve thousand, two hundred twenty-two".