22112210121212 has 24 divisors (see below), whose sum is σ = 39251822635872. Its totient is φ = 10897486476800.

The previous prime is 22112210121179. The next prime is 22112210121223. The reversal of 22112210121212 is 21212101221122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9282833 + ... + 11419080.

It is an arithmetic number, because the mean of its divisors is an integer number (1635492609828).

Almost surely, 2^{22112210121212} is an apocalyptic number.

It is an amenable number.

22112210121212 is a deficient number, since it is larger than the sum of its proper divisors (17139612514660).

22112210121212 is a wasteful number, since it uses less digits than its factorization.

22112210121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20705749 (or 20705747 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22112210121212 its reverse (21212101221122), we get a palindrome (43324311342334).

The spelling of 22112210121212 in words is "twenty-two trillion, one hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred twelve".