22121102102210 has 96 divisors (see below), whose sum is σ = 42717081663360. Its totient is φ = 8245831989248.

The previous prime is 22121102102201. The next prime is 22121102102257. The reversal of 22121102102210 is 1220120112122.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 47 ways as a sum of consecutive naturals, for example, 120441467 + ... + 120624993.

It is an arithmetic number, because the mean of its divisors is an integer number (444969600660).

Almost surely, 2^{22121102102210} is an apocalyptic number.

22121102102210 is a deficient number, since it is larger than the sum of its proper divisors (20595979561150).

22121102102210 is a wasteful number, since it uses less digits than its factorization.

22121102102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183980 (or 183963 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22121102102210 its reverse (1220120112122), we get a palindrome (23341222214332).

The spelling of 22121102102210 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, one hundred two thousand, two hundred ten".