21022002202222 has 16 divisors (see below), whose sum is σ = 37934440064640. Its totient is φ = 8535249014328.

The previous prime is 21022002202219. The next prime is 21022002202237. The reversal of 21022002202222 is 22220220022012.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 21022002202222.

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 7 ways as a sum of consecutive naturals, for example, 39515041468 + ... + 39515041999.

It is an arithmetic number, because the mean of its divisors is an integer number (2370902504040).

Almost surely, 2^{21022002202222} is an apocalyptic number.

21022002202222 is a deficient number, since it is larger than the sum of its proper divisors (16912437862418).

21022002202222 is a wasteful number, since it uses less digits than its factorization.

21022002202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79030083495.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 21022002202222 its reverse (22220220022012), we get a palindrome (43242222224234).

The spelling of 21022002202222 in words is "twenty-one trillion, twenty-two billion, two million, two hundred two thousand, two hundred twenty-two".