111222220000 has 120 divisors (see below), whose sum is σ = 276185885976. Its totient is φ = 44072256000.

The previous prime is 111222219973. The next prime is 111222220013. The reversal of 111222220000 is 22222111.

It is a happy number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2114014 + ... + 2165986.

Almost surely, 2^111222220000 is an apocalyptic number.

111222220000 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 111222220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138092942988).

111222220000 is an abundant number, since it is smaller than the sum of its proper divisors (164963665976).

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

111222220000 is an equidigital number, since it uses as much as digits as its factorization.

111222220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52110 (or 52087 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 111222220000 its reverse (22222111), we get a palindrome (111244442111).

The spelling of 111222220000 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand".