20212021222122 has 64 divisors (see below), whose sum is σ = 43463052472320. Its totient is φ = 6246067189824.

The previous prime is 20212021222079. The next prime is 20212021222163. The reversal of 20212021222122 is 22122212021202.

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 31 ways as a sum of consecutive naturals, for example, 38601523 + ... + 39121625.

It is an arithmetic number, because the mean of its divisors is an integer number (679110194880).

Almost surely, 2^{20212021222122} is an apocalyptic number.

20212021222122 is an abundant number, since it is smaller than the sum of its proper divisors (23251031250198).

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

20212021222122 is a wasteful number, since it uses less digits than its factorization.

20212021222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527427.

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

Adding to 20212021222122 its reverse (22122212021202), we get a palindrome (42334233243324).

The spelling of 20212021222122 in words is "twenty trillion, two hundred twelve billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".