201122200220 has 96 divisors (see below), whose sum is σ = 449527434048. Its totient is φ = 75323768832.

The previous prime is 201122200219. The next prime is 201122200229. The reversal of 201122200220 is 22002221102.

It is a junction number, because it is equal to n+sod(n) for n = 201122200195 and 201122200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122200229) 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, 63105467 + ... + 63108653.

It is an arithmetic number, because the mean of its divisors is an integer number (4682577438).

Almost surely, 2^201122200220 is an apocalyptic number.

201122200220 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 201122200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224763717024).

201122200220 is an abundant number, since it is smaller than the sum of its proper divisors (248405233828).

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

201122200220 is a wasteful number, since it uses less digits than its factorization.

201122200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119 (or 4117 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 201122200220 its reverse (22002221102), we get a palindrome (223124421322).

The spelling of 201122200220 in words is "two hundred one billion, one hundred twenty-two million, two hundred thousand, two hundred twenty".