100221212222 has 8 divisors (see below), whose sum is σ = 150446842776. Its totient is φ = 50072264632.

The previous prime is 100221212213. The next prime is 100221212227. The reversal of 100221212222 is 222212122001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 100221212222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221212227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19167473 + ... + 19172700.

It is an arithmetic number, because the mean of its divisors is an integer number (18805855347).

Almost surely, 2^100221212222 is an apocalyptic number.

100221212222 is a deficient number, since it is larger than the sum of its proper divisors (50225630554).

100221212222 is a wasteful number, since it uses less digits than its factorization.

100221212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38341482.

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

Adding to 100221212222 its reverse (222212122001), we get a palindrome (322433334223).

The spelling of 100221212222 in words is "one hundred billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twenty-two".