100101222 has 48 divisors (see below), whose sum is σ = 235199328. Its totient is φ = 30585600.

The previous prime is 100101217. The next prime is 100101223. The reversal of 100101222 is 222101001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33918 + ... + 36750.

It is an arithmetic number, because the mean of its divisors is an integer number (4899986).

Almost surely, 2^100101222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100101222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117599664).

100101222 is an abundant number, since it is smaller than the sum of its proper divisors (135098106).

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

100101222 is a wasteful number, since it uses less digits than its factorization.

100101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005 (or 3002 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 100101222 is about 10005.0598199111. The cubic root of 100101222 is about 464.3154408513.

Adding to 100101222 its reverse (222101001), we get a palindrome (322202223).

The spelling of 100101222 in words is "one hundred million, one hundred one thousand, two hundred twenty-two".