111000201020020 has 48 divisors (see below), whose sum is σ = 251034281538768. Its totient is φ = 40984190392320.

The previous prime is 111000201019991. The next prime is 111000201020041. The reversal of 111000201020020 is 20020102000111.

It can be written as a sum of positive squares in 8 ways, for example, as 33782575549284 + 77217625470736 = 5812278^2 + 8787356^2 .

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 = 111000201019979 and 111000201020006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19135260 + ... + 24251980.

It is an arithmetic number, because the mean of its divisors is an integer number (5229880865391).

Almost surely, 2^{111000201020020} is an apocalyptic number.

111000201020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111000201020020 is an abundant number, since it is smaller than the sum of its proper divisors (140034080518748).

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

111000201020020 is a wasteful number, since it uses less digits than its factorization.

111000201020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200180 (or 5200178 counting only the distinct ones).

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

Adding to 111000201020020 its reverse (20020102000111), we get a palindrome (131020303020131).

The spelling of 111000201020020 in words is "one hundred eleven trillion, two hundred one million, twenty thousand, twenty".