100002222 has 32 divisors (see below), whose sum is σ = 225365760. Its totient is φ = 32863320.

The previous prime is 100002181. The next prime is 100002223. The reversal of 100002222 is 222200001.

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 (100002223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9208 + ... + 16875.

It is an arithmetic number, because the mean of its divisors is an integer number (7042680).

Almost surely, 2^100002222 is an apocalyptic number.

100002222 is an abundant number, since it is smaller than the sum of its proper divisors (125363538).

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

100002222 is a wasteful number, since it uses less digits than its factorization.

100002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26165 (or 26159 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 100002222 is about 10000.1110993828. Note that the first 3 decimals coincide. The cubic root of 100002222 is about 464.1623212059.

Adding to 100002222 its reverse (222200001), we get a palindrome (322202223).

The spelling of 100002222 in words is "one hundred million, two thousand, two hundred twenty-two".