22121212110222 has 32 divisors (see below), whose sum is σ = 44811899153280. Its totient is φ = 7278969459680.

The previous prime is 22121212110169. The next prime is 22121212110241. The reversal of 22121212110222 is 22201121212122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17459604 + ... + 18683687.

It is an arithmetic number, because the mean of its divisors is an integer number (1400371848540).

Almost surely, 2^{22121212110222} is an apocalyptic number.

22121212110222 is an abundant number, since it is smaller than the sum of its proper divisors (22690687043058).

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

22121212110222 is a wasteful number, since it uses less digits than its factorization.

22121212110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36144608.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22121212110222 its reverse (22201121212122), we get a palindrome (44322333322344).

The spelling of 22121212110222 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, two hundred twenty-two".