1000222001012 has 24 divisors (see below), whose sum is σ = 1950034938600. Its totient is φ = 445722270336.

The previous prime is 1000222001003. The next prime is 1000222001017. The reversal of 1000222001012 is 2101002220001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 869896036 + 999352104976 = 29494^2 + 999676^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000222000984 and 1000222001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222001017) by changing a digit.

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, 331637087 + ... + 331640102.

It is an arithmetic number, because the mean of its divisors is an integer number (81251455775).

Almost surely, 2^{1000222001012} is an apocalyptic number.

It is an amenable number.

1000222001012 is a deficient number, since it is larger than the sum of its proper divisors (949812937588).

1000222001012 is a wasteful number, since it uses less digits than its factorization.

1000222001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663277235 (or 663277233 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000222001012 its reverse (2101002220001), we get a palindrome (3101224221013).

The spelling of 1000222001012 in words is "one trillion, two hundred twenty-two million, one thousand, twelve".