100222221212 has 24 divisors (see below), whose sum is σ = 184692950400. Its totient is φ = 47454894576.

The previous prime is 100222221181. The next prime is 100222221241. The reversal of 100222221212 is 212122222001.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 66728 + ... + 452655.

It is an arithmetic number, because the mean of its divisors is an integer number (7695539600).

Almost surely, 2^100222221212 is an apocalyptic number.

It is an amenable number.

100222221212 is a deficient number, since it is larger than the sum of its proper divisors (84470729188).

100222221212 is a wasteful number, since it uses less digits than its factorization.

100222221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521945 (or 521943 counting only the distinct ones).

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

Adding to 100222221212 its reverse (212122222001), we get a palindrome (312344443213).

The spelling of 100222221212 in words is "one hundred billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".