111220012000 has 96 divisors (see below), whose sum is σ = 274473632160. Its totient is φ = 44291660800.

The previous prime is 111220011977. The next prime is 111220012019. The reversal of 111220012000 is 210022111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846756 + ... + 969244.

It is an arithmetic number, because the mean of its divisors is an integer number (2859100335).

Almost surely, 2^111220012000 is an apocalyptic number.

111220012000 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 111220012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137236816080).

111220012000 is an abundant number, since it is smaller than the sum of its proper divisors (163253620160).

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

111220012000 is a wasteful number, since it uses less digits than its factorization.

111220012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122741 (or 122723 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111220012000 its reverse (210022111), we get a palindrome (111430034111).

The spelling of 111220012000 in words is "one hundred eleven billion, two hundred twenty million, twelve thousand".