10002222 has 24 divisors (see below), whose sum is σ = 22946976. Its totient is φ = 3137856.

The previous prime is 10002203. The next prime is 10002257. The reversal of 10002222 is 22220001.

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

10002222 is a modest number, since divided by 2222 gives 1000 as remainder.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16038 + ... + 16649.

It is an arithmetic number, because the mean of its divisors is an integer number (956124).

Almost surely, 2^10002222 is an apocalyptic number.

10002222 is an abundant number, since it is smaller than the sum of its proper divisors (12944754).

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

10002222 is a wasteful number, since it uses less digits than its factorization.

10002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32712 (or 32709 counting only the distinct ones).

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

The square root of 10002222 is about 3162.6289697023. The cubic root of 10002222 is about 215.4594250010.

Adding to 10002222 its reverse (22220001), we get a palindrome (32222223).

The spelling of 10002222 in words is "ten million, two thousand, two hundred twenty-two".