22200200222121 has 12 divisors (see below), whose sum is σ = 33953247398772. Its totient is φ = 13929537394176.

The previous prime is 22200200222089. The next prime is 22200200222129. The reversal of 22200200222121 is 12122200200222.

22200200222121 is a `hidden beast` number, since 2 + 220 + 0 + 200 + 2 + 221 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20622134145600 + 1578066076521 = 4541160^2 + 1256211^2 .

It is not a de Polignac number, because 22200200222121 - 2⁵ = 22200200222089 is a prime.

It is a super-2 number, since 2×22200200222121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22200200222094 and 22200200222103.

It is not an unprimeable number, because it can be changed into a prime (22200200222129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72549673776 + ... + 72549674081.

It is an arithmetic number, because the mean of its divisors is an integer number (2829437283231).

Almost surely, 2^{22200200222121} is an apocalyptic number.

It is an amenable number.

22200200222121 is a deficient number, since it is larger than the sum of its proper divisors (11753047176651).

22200200222121 is a wasteful number, since it uses less digits than its factorization.

22200200222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145099347880 (or 145099347877 counting only the distinct ones).

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

Adding to 22200200222121 its reverse (12122200200222), we get a palindrome (34322400422343).

It can be divided in two parts, 22200200222 and 121, that multiplied together give a palindrome (2686224226862).

The spelling of 22200200222121 in words is "twenty-two trillion, two hundred billion, two hundred million, two hundred twenty-two thousand, one hundred twenty-one".