201122222222220 has 192 divisors, whose sum is σ = 611910169403904. Its totient is φ = 49063887544320.

The previous prime is 201122222222203. The next prime is 201122222222237. The reversal of 201122222222220 is 22222222221102.

It is an interprime number because it is at equal distance from previous prime (201122222222203) and next prime (201122222222237).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42639775 + ... + 47121065.

It is an arithmetic number, because the mean of its divisors is an integer number (3187032132312).

Almost surely, 2^{201122222222220} is an apocalyptic number.

201122222222220 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 201122222222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305955084701952).

201122222222220 is an abundant number, since it is smaller than the sum of its proper divisors (410787947181684).

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

201122222222220 is a wasteful number, since it uses less digits than its factorization.

201122222222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481832 (or 4481830 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 201122222222220 its reverse (22222222221102), we get a palindrome (223344444443322).

The spelling of 201122222222220 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".