201111110002020 has 192 divisors, whose sum is σ = 583777268637696. Its totient is φ = 51689985822720.

The previous prime is 201111110002001. The next prime is 201111110002021. The reversal of 201111110002020 is 20200011111102.

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 = 201111110001987 and 201111110002005.

It is not an unprimeable number, because it can be changed into a prime (201111110002021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183560640 + ... + 184653000.

It is an arithmetic number, because the mean of its divisors is an integer number (3040506607488).

Almost surely, 2^{201111110002020} is an apocalyptic number.

201111110002020 is a gapful number since it is divisible by the number (20) 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 201111110002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291888634318848).

201111110002020 is an abundant number, since it is smaller than the sum of its proper divisors (382666158635676).

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

201111110002020 is a wasteful number, since it uses less digits than its factorization.

201111110002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093190 (or 1093188 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 201111110002020 its reverse (20200011111102), we get a palindrome (221311121113122).

The spelling of 201111110002020 in words is "two hundred one trillion, one hundred eleven billion, one hundred ten million, two thousand, twenty".