111020201200020 has 192 divisors, whose sum is σ = 356267296530432. Its totient is φ = 25304519232000.

The previous prime is 111020201200003. The next prime is 111020201200031. The reversal of 111020201200020 is 20002102020111.

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 = 111020201199969 and 111020201200005.

It is a congruent number.

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, 234026865 + ... + 234500775.

It is an arithmetic number, because the mean of its divisors is an integer number (1855558836096).

Almost surely, 2^{111020201200020} is an apocalyptic number.

111020201200020 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 111020201200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178133648265216).

111020201200020 is an abundant number, since it is smaller than the sum of its proper divisors (245247095330412).

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

111020201200020 is a wasteful number, since it uses less digits than its factorization.

111020201200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475502 (or 475500 counting only the distinct ones).

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

Adding to 111020201200020 its reverse (20002102020111), we get a palindrome (131022303220131).

The spelling of 111020201200020 in words is "one hundred eleven trillion, twenty billion, two hundred one million, two hundred thousand, twenty".