12100121122222 has 32 divisors (see below), whose sum is σ = 21002930049024. Its totient is φ = 5120859098400.

The previous prime is 12100121122171. The next prime is 12100121122267. The reversal of 12100121122222 is 22222112100121.

It is a self number, because there is not a number n which added to its sum of digits gives 12100121122222.

It is a congruent number.

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, 13429 + ... + 4919392.

It is an arithmetic number, because the mean of its divisors is an integer number (656341564032).

Almost surely, 2^{12100121122222} is an apocalyptic number.

12100121122222 is a deficient number, since it is larger than the sum of its proper divisors (8902808926802).

12100121122222 is a wasteful number, since it uses less digits than its factorization.

12100121122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935024.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12100121122222 its reverse (22222112100121), we get a palindrome (34322233222343).

The spelling of 12100121122222 in words is "twelve trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".