111000001202020 has 144 divisors (see below), whose sum is σ = 275080599182592. Its totient is φ = 37506889969920.

The previous prime is 111000001201981. The next prime is 111000001202023. The reversal of 111000001202020 is 20202100000111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111000001201988 and 111000001202006.

It is not an unprimeable number, because it can be changed into a prime (111000001202023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 183876922 + ... + 184479598.

It is an arithmetic number, because the mean of its divisors is an integer number (1910281938768).

Almost surely, 2^{111000001202020} is an apocalyptic number.

111000001202020 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 111000001202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137540299591296).

111000001202020 is an abundant number, since it is smaller than the sum of its proper divisors (164080597980572).

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

111000001202020 is a wasteful number, since it uses less digits than its factorization.

111000001202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605418 (or 605409 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111000001202020 its reverse (20202100000111), we get a palindrome (131202101202131).

The spelling of 111000001202020 in words is "one hundred eleven trillion, one million, two hundred two thousand, twenty".