1001021222112 has 24 divisors (see below), whose sum is σ = 2627680708296. Its totient is φ = 333673740672.

The previous prime is 1001021222099. The next prime is 1001021222129. The reversal of 1001021222112 is 2112221201001.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 1001021222091 and 1001021222100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5213652103 + ... + 5213652294.

It is an arithmetic number, because the mean of its divisors is an integer number (109486696179).

Almost surely, 2^{1001021222112} is an apocalyptic number.

1001021222112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001021222112 is an abundant number, since it is smaller than the sum of its proper divisors (1626659486184).

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

1001021222112 is a wasteful number, since it uses less digits than its factorization.

1001021222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10427304410 (or 10427304402 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1001021222112 its reverse (2112221201001), we get a palindrome (3113242423113).

The spelling of 1001021222112 in words is "one trillion, one billion, twenty-one million, two hundred twenty-two thousand, one hundred twelve".