111200120001222 has 256 divisors, whose sum is σ = 266697755394048. Its totient is φ = 30248925235200.

The previous prime is 111200120001221. The next prime is 111200120001227. The reversal of 111200120001222 is 222100021002111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200120001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25289995528 + ... + 25289999924.

It is an arithmetic number, because the mean of its divisors is an integer number (1041788107008).

Almost surely, 2^{111200120001222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111200120001222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133348877697024).

111200120001222 is an abundant number, since it is smaller than the sum of its proper divisors (155497635392826).

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

111200120001222 is a wasteful number, since it uses less digits than its factorization.

111200120001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111200120001222 its reverse (222100021002111), we get a palindrome (333300141003333).

The spelling of 111200120001222 in words is "one hundred eleven trillion, two hundred billion, one hundred twenty million, one thousand, two hundred twenty-two".