100222122212 has 12 divisors (see below), whose sum is σ = 175391309100. Its totient is φ = 50110319616.

The previous prime is 100222122197. The next prime is 100222122283. The reversal of 100222122212 is 212221222001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50115090496 + 50107031716 = 223864^2 + 223846^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214664 + ... + 496512.

It is an arithmetic number, because the mean of its divisors is an integer number (14615942425).

Almost surely, 2^100222122212 is an apocalyptic number.

It is an amenable number.

100222122212 is a deficient number, since it is larger than the sum of its proper divisors (75169186888).

100222122212 is a wasteful number, since it uses less digits than its factorization.

100222122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370750 (or 370748 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100222122212 its reverse (212221222001), we get a palindrome (312443344213).

The spelling of 100222122212 in words is "one hundred billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".