21220002002022 has 16 divisors (see below), whose sum is σ = 42677099000640. Its totient is φ = 7033818167912.

The previous prime is 21220002002021. The next prime is 21220002002057. The reversal of 21220002002022 is 22020020002212.

It is a junction number, because it is equal to n+sod(n) for n = 21220002001992 and 21220002002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220002002021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9878957028 + ... + 9878959175.

It is an arithmetic number, because the mean of its divisors is an integer number (2667318687540).

Almost surely, 2^{21220002002022} is an apocalyptic number.

21220002002022 is an abundant number, since it is smaller than the sum of its proper divisors (21457096998618).

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

21220002002022 is a wasteful number, since it uses less digits than its factorization.

21220002002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19757916387.

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

Adding to 21220002002022 its reverse (22020020002212), we get a palindrome (43240022004234).

The spelling of 21220002002022 in words is "twenty-one trillion, two hundred twenty billion, two million, two thousand, twenty-two".