100112212121212 has 24 divisors (see below), whose sum is σ = 177602747040432. Its totient is φ = 49368619728000.

The previous prime is 100112212121161. The next prime is 100112212121237. The reversal of 100112212121212 is 212121212211001.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 100112212121212.

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, 1900287 + ... + 14277097.

It is an arithmetic number, because the mean of its divisors is an integer number (7400114460018).

Almost surely, 2^{100112212121212} is an apocalyptic number.

It is an amenable number.

100112212121212 is a deficient number, since it is larger than the sum of its proper divisors (77490534919220).

100112212121212 is a wasteful number, since it uses less digits than its factorization.

100112212121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12404589 (or 12404587 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 100112212121212 its reverse (212121212211001), we get a palindrome (312233424332213).

The spelling of 100112212121212 in words is "one hundred trillion, one hundred twelve billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".