22121000100222 has 8 divisors (see below), whose sum is σ = 44242000200456. Its totient is φ = 7373666700072.

The previous prime is 22121000100163. The next prime is 22121000100223. The reversal of 22121000100222 is 22200100012122.

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

22121000100222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121000100223) by changing a digit.

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, 1843416675013 + ... + 1843416675024.

It is an arithmetic number, because the mean of its divisors is an integer number (5530250025057).

Almost surely, 2^{22121000100222} is an apocalyptic number.

22121000100222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22121000100222 is a wasteful number, since it uses less digits than its factorization.

22121000100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686833350042.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22121000100222 its reverse (22200100012122), we get a palindrome (44321100112344).

The spelling of 22121000100222 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred thousand, two hundred twenty-two".