21200222121122 has 16 divisors (see below), whose sum is σ = 34977977298144. Its totient is φ = 9636464599300.

The previous prime is 21200222120989. The next prime is 21200222121131. The reversal of 21200222121122 is 22112122200212.

It is a junction number, because it is equal to n+sod(n) for n = 21200222121094 and 21200222121103.

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, 3982007504 + ... + 3982012827.

It is an arithmetic number, because the mean of its divisors is an integer number (2186123581134).

Almost surely, 2^{21200222121122} is an apocalyptic number.

21200222121122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21200222121122 is a deficient number, since it is larger than the sum of its proper divisors (13777755177022).

21200222121122 is an equidigital number, since it uses as much as digits as its factorization.

21200222121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7964020366 (or 7964020344 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21200222121122 its reverse (22112122200212), we get a palindrome (43312344321334).

The spelling of 21200222121122 in words is "twenty-one trillion, two hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-two".