201111222102020 has 48 divisors (see below), whose sum is σ = 425284378682688. Its totient is φ = 79883265156480.

The previous prime is 201111222102019. The next prime is 201111222102023. The reversal of 201111222102020 is 20201222111102.

It is a self number, because there is not a number n which added to its sum of digits gives 201111222102020.

It is not an unprimeable number, because it can be changed into a prime (201111222102023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22267874 + ... + 29967993.

It is an arithmetic number, because the mean of its divisors is an integer number (8860091222556).

Almost surely, 2^{201111222102020} is an apocalyptic number.

201111222102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111222102020 is an abundant number, since it is smaller than the sum of its proper divisors (224173156580668).

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

201111222102020 is a wasteful number, since it uses less digits than its factorization.

201111222102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52237220 (or 52237218 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201111222102020 its reverse (20201222111102), we get a palindrome (221312444213122).

The spelling of 201111222102020 in words is "two hundred one trillion, one hundred eleven billion, two hundred twenty-two million, one hundred two thousand, twenty".