201111222110020 has 12 divisors (see below), whose sum is σ = 422333566431084. Its totient is φ = 80444488844000.

The previous prime is 201111222110009. The next prime is 201111222110027. The reversal of 201111222110020 is 20011222111102.

It can be written as a sum of positive squares in 2 ways, for example, as 85320838877184 + 115790383232836 = 9236928^2 + 10760594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201111222109976 and 201111222110003.

It is not an unprimeable number, because it can be changed into a prime (201111222110027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027780552731 + ... + 5027780552770.

It is an arithmetic number, because the mean of its divisors is an integer number (35194463869257).

Almost surely, 2^{201111222110020} is an apocalyptic number.

201111222110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111222110020 is an abundant number, since it is smaller than the sum of its proper divisors (221222344321064).

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

201111222110020 is a wasteful number, since it uses less digits than its factorization.

201111222110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055561105510 (or 10055561105508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201111222110020 its reverse (20011222111102), we get a palindrome (221122444221122).

The spelling of 201111222110020 in words is "two hundred one trillion, one hundred eleven billion, two hundred twenty-two million, one hundred ten thousand, twenty".