1001222220012 has 24 divisors (see below), whose sum is σ = 2669925920256. Its totient is φ = 286063491408.

The previous prime is 1001222220001. The next prime is 1001222220017. The reversal of 1001222220012 is 2100222221001.

It is a junction number, because it is equal to n+sod(n) for n = 1001222219973 and 1001222220000.

It is not an unprimeable number, because it can be changed into a prime (1001222220017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5959655988 + ... + 5959656155.

It is an arithmetic number, because the mean of its divisors is an integer number (111246913344).

Almost surely, 2^{1001222220012} is an apocalyptic number.

1001222220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001222220012 is an abundant number, since it is smaller than the sum of its proper divisors (1668703700244).

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

1001222220012 is a wasteful number, since it uses less digits than its factorization.

1001222220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11919312157 (or 11919312155 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1001222220012 its reverse (2100222221001), we get a palindrome (3101444441013).

The spelling of 1001222220012 in words is "one trillion, one billion, two hundred twenty-two million, two hundred twenty thousand, twelve".