111001001112220 has 96 divisors (see below), whose sum is σ = 257562603906048. Its totient is φ = 39968989074432.

The previous prime is 111001001112191. The next prime is 111001001112241. The reversal of 111001001112220 is 22211100100111.

It is a happy number.

It is a super-3 number, since 3×111001001112220³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111001001112220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115939599 + ... + 116893081.

It is an arithmetic number, because the mean of its divisors is an integer number (2682943790688).

Almost surely, 2^{111001001112220} is an apocalyptic number.

111001001112220 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 111001001112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128781301953024).

111001001112220 is an abundant number, since it is smaller than the sum of its proper divisors (146561602793828).

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

111001001112220 is a wasteful number, since it uses less digits than its factorization.

111001001112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968419 (or 968417 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111001001112220 its reverse (22211100100111), we get a palindrome (133212101212331).

The spelling of 111001001112220 in words is "one hundred eleven trillion, one billion, one million, one hundred twelve thousand, two hundred twenty".