22121000120210 has 8 divisors (see below), whose sum is σ = 39817800216396. Its totient is φ = 8848400048080.

The previous prime is 22121000120189. The next prime is 22121000120239. The reversal of 22121000120210 is 1202100012122.

It can be written as a sum of positive squares in 2 ways, for example, as 21382402540321 + 738597579889 = 4624111^2 + 859417^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106050006001 + ... + 1106050006020.

Almost surely, 2^{22121000120210} is an apocalyptic number.

22121000120210 is a deficient number, since it is larger than the sum of its proper divisors (17696800096186).

22121000120210 is a wasteful number, since it uses less digits than its factorization.

22121000120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212100012028.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22121000120210 its reverse (1202100012122), we get a palindrome (23323100132332).

The spelling of 22121000120210 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty thousand, two hundred ten".