22112212221210 has 32 divisors (see below), whose sum is σ = 54503614991232. Its totient is φ = 5737222630080.

The previous prime is 22112212221163. The next prime is 22112212221241. The reversal of 22112212221210 is 1212221221122.

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 15 ways as a sum of consecutive naturals, for example, 9960454846 + ... + 9960457065.

It is an arithmetic number, because the mean of its divisors is an integer number (1703237968476).

Almost surely, 2^{22112212221210} is an apocalyptic number.

22112212221210 is an abundant number, since it is smaller than the sum of its proper divisors (32391402770022).

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

22112212221210 is a wasteful number, since it uses less digits than its factorization.

22112212221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19920911958.

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

Adding to 22112212221210 its reverse (1212221221122), we get a palindrome (23324433442332).

The spelling of 22112212221210 in words is "twenty-two trillion, one hundred twelve billion, two hundred twelve million, two hundred twenty-one thousand, two hundred ten".