111102112210020 has 192 divisors, whose sum is σ = 320947927351296. Its totient is φ = 28695487265280.

The previous prime is 111102112210013. The next prime is 111102112210087. The reversal of 111102112210020 is 20012211201111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 622516437 + ... + 622694883.

It is an arithmetic number, because the mean of its divisors is an integer number (1671603788288).

Almost surely, 2^{111102112210020} is an apocalyptic number.

111102112210020 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 111102112210020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160473963675648).

111102112210020 is an abundant number, since it is smaller than the sum of its proper divisors (209845815141276).

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

111102112210020 is a wasteful number, since it uses less digits than its factorization.

111102112210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179770 (or 179768 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111102112210020 its reverse (20012211201111), we get a palindrome (131114323411131).

The spelling of 111102112210020 in words is "one hundred eleven trillion, one hundred two billion, one hundred twelve million, two hundred ten thousand, twenty".