20222122212222 has 96 divisors (see below), whose sum is σ = 47237027939712. Its totient is φ = 5754480169536.

The previous prime is 20222122212209. The next prime is 20222122212239. The reversal of 20222122212222 is 22221222122202.

It is a junction number, because it is equal to n+sod(n) for n = 20222122212192 and 20222122212201.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 170754513 + ... + 170872899.

It is an arithmetic number, because the mean of its divisors is an integer number (492052374372).

Almost surely, 2^{20222122212222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20222122212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23618513969856).

20222122212222 is an abundant number, since it is smaller than the sum of its proper divisors (27014905727490).

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

20222122212222 is a wasteful number, since it uses less digits than its factorization.

20222122212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120742 (or 120735 counting only the distinct ones).

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

Adding to 20222122212222 its reverse (22221222122202), we get a palindrome (42443344334424).

The spelling of 20222122212222 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".