1001122209999 has 24 divisors (see below), whose sum is σ = 1485455194080. Its totient is φ = 649242364608.

The previous prime is 1001122209977. The next prime is 1001122210003. The reversal of 1001122209999 is 9999022211001.

It is not a de Polignac number, because 1001122209999 - 2¹² = 1001122205903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001122209929) 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 23 ways as a sum of consecutive naturals, for example, 1315822 + ... + 1932260.

It is an arithmetic number, because the mean of its divisors is an integer number (61893966420).

Almost surely, 2^{1001122209999} is an apocalyptic number.

1001122209999 is a deficient number, since it is larger than the sum of its proper divisors (484332984081).

1001122209999 is a wasteful number, since it uses less digits than its factorization.

1001122209999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621359 (or 621356 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

It can be divided in two parts, 1001122 and 209999, that added together give a palindrome (1211121).

The spelling of 1001122209999 in words is "one trillion, one billion, one hundred twenty-two million, two hundred nine thousand, nine hundred ninety-nine".