21022202222022 has 8 divisors (see below), whose sum is σ = 42044404444056. Its totient is φ = 7007400740672.

The previous prime is 21022202222011. The next prime is 21022202222057. The reversal of 21022202222022 is 22022220222012.

It is a sphenic number, since it is the product of 3 distinct primes.

21022202222022 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21022202222022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751850185163 + ... + 1751850185174.

It is an arithmetic number, because the mean of its divisors is an integer number (5255550555507).

Almost surely, 2^{21022202222022} is an apocalyptic number.

21022202222022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21022202222022 is a wasteful number, since it uses less digits than its factorization.

21022202222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503700370342.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 21022202222022 its reverse (22022220222012), we get a palindrome (43044422444034).

The spelling of 21022202222022 in words is "twenty-one trillion, twenty-two billion, two hundred two million, two hundred twenty-two thousand, twenty-two".