100021224 has 16 divisors (see below), whose sum is σ = 250053120. Its totient is φ = 33340400.

The previous prime is 100021223. The next prime is 100021231. The reversal of 100021224 is 422120001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (100021223) 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, 2083752 + ... + 2083799.

It is an arithmetic number, because the mean of its divisors is an integer number (15628320).

Almost surely, 2^100021224 is an apocalyptic number.

It is an amenable number.

100021224 is an abundant number, since it is smaller than the sum of its proper divisors (150031896).

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

100021224 is a wasteful number, since it uses less digits than its factorization.

100021224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167560 (or 4167556 counting only the distinct ones).

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

The square root of 100021224 is about 10001.0611436987. The cubic root of 100021224 is about 464.1917187322.

Adding to 100021224 its reverse (422120001), we get a palindrome (522141225).

The spelling of 100021224 in words is "one hundred million, twenty-one thousand, two hundred twenty-four".