102001222 has 16 divisors (see below), whose sum is σ = 158281344. Its totient is φ = 49248000.

The previous prime is 102001217. The next prime is 102001247. The reversal of 102001222 is 222100201.

It is a junction number, because it is equal to n+sod(n) for n = 102001199 and 102001208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32022 + ... + 35062.

It is an arithmetic number, because the mean of its divisors is an integer number (9892584).

Almost surely, 2^102001222 is an apocalyptic number.

102001222 is a deficient number, since it is larger than the sum of its proper divisors (56280122).

102001222 is a wasteful number, since it uses less digits than its factorization.

102001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615.

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

The square root of 102001222 is about 10099.5654361958. The cubic root of 102001222 is about 467.2347387058.

Adding to 102001222 its reverse (222100201), we get a palindrome (324101423).

The spelling of 102001222 in words is "one hundred two million, one thousand, two hundred twenty-two".