21202122200022 has 20 divisors (see below), whose sum is σ = 47508459004116. Its totient is φ = 7067374066620.

The previous prime is 21202122199997. The next prime is 21202122200057. The reversal of 21202122200022 is 22000222120212.

21202122200022 is a `hidden beast` number, since 212 + 0 + 212 + 220 + 0 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21202122199968 and 21202122200004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 65438648604 + ... + 65438648927.

Almost surely, 2^{21202122200022} is an apocalyptic number.

21202122200022 is an abundant number, since it is smaller than the sum of its proper divisors (26306336804094).

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

21202122200022 is a wasteful number, since it uses less digits than its factorization.

21202122200022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130877297545 (or 130877297536 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21202122200022 its reverse (22000222120212), we get a palindrome (43202344320234).

It can be divided in two parts, 2120212 and 2200022, that added together give a palindrome (4320234).

The spelling of 21202122200022 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-two million, two hundred thousand, twenty-two".