100001224 has 16 divisors (see below), whose sum is σ = 190681200. Its totient is φ = 49152912.

The previous prime is 100001219. The next prime is 100001227. The reversal of 100001224 is 422100001.

It is a self number, because there is not a number n which added to its sum of digits gives 100001224.

It is not an unprimeable number, because it can be changed into a prime (100001227) 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, 105462 + ... + 106405.

It is an arithmetic number, because the mean of its divisors is an integer number (11917575).

Almost surely, 2^100001224 is an apocalyptic number.

It is an amenable number.

100001224 is a deficient number, since it is larger than the sum of its proper divisors (90679976).

100001224 is a wasteful number, since it uses less digits than its factorization.

100001224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211932 (or 211928 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 100001224 is about 10000.0611998127. The cubic root of 100001224 is about 464.1607771218.

Adding to 100001224 its reverse (422100001), we get a palindrome (522101225).

The spelling of 100001224 in words is "one hundred million, one thousand, two hundred twenty-four".