111222000000 has 672 divisors, whose sum is σ = 413333771760. Its totient is φ = 28684800000.

The previous prime is 111221999983. The next prime is 111222000007. The reversal of 111222000000 is 222111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222000007) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 665999917 + ... + 666000083.

Almost surely, 2^111222000000 is an apocalyptic number.

111222000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111222000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206666885880).

111222000000 is an abundant number, since it is smaller than the sum of its proper divisors (302111771760).

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

111222000000 is an frugal number, since it uses more digits than its factorization.

111222000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 111222000000 its reverse (222111), we get a palindrome (111222222111).

The spelling of 111222000000 in words is "one hundred eleven billion, two hundred twenty-two million", and thus it is an aban number.