2001222020022 has 32 divisors (see below), whose sum is σ = 4224769710720. Its totient is φ = 631964835432.

The previous prime is 2001222019999. The next prime is 2001222020029. The reversal of 2001222020022 is 2200202221002.

It is a junction number, because it is equal to n+sod(n) for n = 2001222019983 and 2001222020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001222020029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24272668 + ... + 24354975.

It is an arithmetic number, because the mean of its divisors is an integer number (132024053460).

Almost surely, 2^{2001222020022} is an apocalyptic number.

2001222020022 is an abundant number, since it is smaller than the sum of its proper divisors (2223547690698).

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

2001222020022 is an equidigital number, since it uses as much as digits as its factorization.

2001222020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48627705 (or 48627667 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 2001222020022 its reverse (2200202221002), we get a palindrome (4201424241024).

The spelling of 2001222020022 in words is "two trillion, one billion, two hundred twenty-two million, twenty thousand, twenty-two".