21200222122022 has 16 divisors (see below), whose sum is σ = 33992296767072. Its totient is φ = 9891938210880.

The previous prime is 21200222122019. The next prime is 21200222122081. The reversal of 21200222122022 is 22022122200212.

It is a junction number, because it is equal to n+sod(n) for n = 21200222121985 and 21200222122003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5620417553 + ... + 5620421324.

It is an arithmetic number, because the mean of its divisors is an integer number (2124518547942).

Almost surely, 2^{21200222122022} is an apocalyptic number.

21200222122022 is a deficient number, since it is larger than the sum of its proper divisors (12792074645050).

21200222122022 is a wasteful number, since it uses less digits than its factorization.

21200222122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11240838943.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21200222122022 its reverse (22022122200212), we get a palindrome (43222344322234).

The spelling of 21200222122022 in words is "twenty-one trillion, two hundred billion, two hundred twenty-two million, one hundred twenty-two thousand, twenty-two".