111020100000 has 144 divisors (see below), whose sum is σ = 364262373216. Its totient is φ = 29605280000.

The previous prime is 111020099947. The next prime is 111020100031. The reversal of 111020100000 is 1020111.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114967 + ... + 485033.

It is an arithmetic number, because the mean of its divisors is an integer number (2529599814).

Almost surely, 2^111020100000 is an apocalyptic number.

111020100000 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 111020100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182131186608).

111020100000 is an abundant number, since it is smaller than the sum of its proper divisors (253242273216).

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

111020100000 is an frugal number, since it uses more digits than its factorization.

111020100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370105 (or 370077 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 111020100000 its reverse (1020111), we get a palindrome (111021120111).

The spelling of 111020100000 in words is "one hundred eleven billion, twenty million, one hundred thousand".