111222122111200 has 72 divisors (see below), whose sum is σ = 272133920704968. Its totient is φ = 44388422407680.

The previous prime is 111222122111161. The next prime is 111222122111201. The reversal of 111222122111200 is 2111221222111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222122111201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156561687 + ... + 157270486.

It is an arithmetic number, because the mean of its divisors is an integer number (3779637787569).

Almost surely, 2^{111222122111200} is an apocalyptic number.

111222122111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222122111200 is an abundant number, since it is smaller than the sum of its proper divisors (160911798593768).

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

111222122111200 is a wasteful number, since it uses less digits than its factorization.

111222122111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313832636 (or 313832623 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111222122111200 its reverse (2111221222111), we get a palindrome (113333343333311).

The spelling of 111222122111200 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred".