21020002200222 has 64 divisors (see below), whose sum is σ = 42765103180800. Its totient is φ = 6886643512320.

The previous prime is 21020002200191. The next prime is 21020002200227. The reversal of 21020002200222 is 22200220002012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020002200227) 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 31 ways as a sum of consecutive naturals, for example, 311710873 + ... + 311778299.

It is an arithmetic number, because the mean of its divisors is an integer number (668204737200).

Almost surely, 2^{21020002200222} is an apocalyptic number.

21020002200222 is an abundant number, since it is smaller than the sum of its proper divisors (21745100980578).

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

21020002200222 is a wasteful number, since it uses less digits than its factorization.

21020002200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70481.

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

Adding to 21020002200222 its reverse (22200220002012), we get a palindrome (43220222202234).

The spelling of 21020002200222 in words is "twenty-one trillion, twenty billion, two million, two hundred thousand, two hundred twenty-two".