1000002001222 has 16 divisors (see below), whose sum is σ = 1714309627392. Its totient is φ = 428567165640.

The previous prime is 1000002001133. The next prime is 1000002001231. The reversal of 1000002001222 is 2221002000001.

It is a junction number, because it is equal to n+sod(n) for n = 1000002001199 and 1000002001208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937197 + ... + 1696567.

It is an arithmetic number, because the mean of its divisors is an integer number (107144351712).

Almost surely, 2^{1000002001222} is an apocalyptic number.

1000002001222 is a deficient number, since it is larger than the sum of its proper divisors (714307626170).

1000002001222 is an equidigital number, since it uses as much as digits as its factorization.

1000002001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853443.

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

Adding to 1000002001222 its reverse (2221002000001), we get a palindrome (3221004001223).

The spelling of 1000002001222 in words is "one trillion, two million, one thousand, two hundred twenty-two".