100221222 has 32 divisors (see below), whose sum is σ = 213194592. Its totient is φ = 31299584.

The previous prime is 100221221. The next prime is 100221223. The reversal of 100221222 is 222122001.

It is an interprime number because it is at equal distance from previous prime (100221221) and next prime (100221223).

It is a junction number, because it is equal to n+sod(n) for n = 100221198 and 100221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21658 + ... + 25874.

It is an arithmetic number, because the mean of its divisors is an integer number (6662331).

Almost surely, 2^100221222 is an apocalyptic number.

100221222 is an abundant number, since it is smaller than the sum of its proper divisors (112973370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100221222 is a wasteful number, since it uses less digits than its factorization.

100221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 100221222 is about 10011.0549893605. The cubic root of 100221222 is about 464.5009051310.

Adding to 100221222 its reverse (222122001), we get a palindrome (322343223).

The spelling of 100221222 in words is "one hundred million, two hundred twenty-one thousand, two hundred twenty-two".