111020200001220 has 96 divisors (see below), whose sum is σ = 316836849151872. Its totient is φ = 29036241215488.

The previous prime is 111020200001213. The next prime is 111020200001237. The reversal of 111020200001220 is 22100002020111.

It is a super-3 number, since 3×111020200001220³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111020200001196 and 111020200001205.

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, 2413819 + ... + 15095261.

It is an arithmetic number, because the mean of its divisors is an integer number (3300383845332).

Almost surely, 2^{111020200001220} is an apocalyptic number.

111020200001220 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 111020200001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158418424575936).

111020200001220 is an abundant number, since it is smaller than the sum of its proper divisors (205816649150652).

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

111020200001220 is a wasteful number, since it uses less digits than its factorization.

111020200001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12684261 (or 12684259 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111020200001220 its reverse (22100002020111), we get a palindrome (133120202021331).

The spelling of 111020200001220 in words is "one hundred eleven trillion, twenty billion, two hundred million, one thousand, two hundred twenty".