201212020222122 has 128 divisors (see below), whose sum is σ = 509568256124928. Its totient is φ = 51542237779200.

The previous prime is 201212020222097. The next prime is 201212020222141. The reversal of 201212020222122 is 221222020212102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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, 2813797 + ... + 20256887.

It is an arithmetic number, because the mean of its divisors is an integer number (3981002000976).

Almost surely, 2^{201212020222122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201212020222122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254784128062464).

201212020222122 is an abundant number, since it is smaller than the sum of its proper divisors (308356235902806).

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

201212020222122 is a wasteful number, since it uses less digits than its factorization.

201212020222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17443724.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 201212020222122 its reverse (221222020212102), we get a palindrome (422434040434224).

The spelling of 201212020222122 in words is "two hundred one trillion, two hundred twelve billion, twenty million, two hundred twenty-two thousand, one hundred twenty-two".