201111022102220 has 96 divisors (see below), whose sum is σ = 448378196208768. Its totient is φ = 75509016625152.

The previous prime is 201111022102171. The next prime is 201111022102229. The reversal of 201111022102220 is 22201220111102.

201111022102220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (201111022102229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391790372 + ... + 392303348.

It is an arithmetic number, because the mean of its divisors is an integer number (4670606210508).

Almost surely, 2^{201111022102220} is an apocalyptic number.

201111022102220 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 201111022102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224189098104384).

201111022102220 is an abundant number, since it is smaller than the sum of its proper divisors (247267174106548).

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

201111022102220 is a wasteful number, since it uses less digits than its factorization.

201111022102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516099 (or 516097 counting only the distinct ones).

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

Adding to 201111022102220 its reverse (22201220111102), we get a palindrome (223312242213322).

The spelling of 201111022102220 in words is "two hundred one trillion, one hundred eleven billion, twenty-two million, one hundred two thousand, two hundred twenty".