222112102121212 has 48 divisors (see below), whose sum is σ = 415553691178080. Its totient is φ = 103509928783872.

The previous prime is 222112102121177. The next prime is 222112102121213. The reversal of 222112102121212 is 212121201211222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112102121213) 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 15 ways as a sum of consecutive naturals, for example, 15225214 + ... + 26000602.

It is an arithmetic number, because the mean of its divisors is an integer number (8657368566210).

Almost surely, 2^{222112102121212} is an apocalyptic number.

It is an amenable number.

222112102121212 is a deficient number, since it is larger than the sum of its proper divisors (193441589056868).

222112102121212 is a wasteful number, since it uses less digits than its factorization.

222112102121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10778350 (or 10778348 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222112102121212 its reverse (212121201211222), we get a palindrome (434233303332434).

The spelling of 222112102121212 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred two million, one hundred twenty-one thousand, two hundred twelve".