1001002112138 has 16 divisors (see below), whose sum is σ = 1716136533504. Its totient is φ = 428967677040.

The previous prime is 1001002112137. The next prime is 1001002112161. The reversal of 1001002112138 is 8312112001001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1001002112137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2581370 + ... + 2943717.

It is an arithmetic number, because the mean of its divisors is an integer number (107258533344).

Almost surely, 2^{1001002112138} is an apocalyptic number.

1001002112138 is a deficient number, since it is larger than the sum of its proper divisors (715134421366).

1001002112138 is a wasteful number, since it uses less digits than its factorization.

1001002112138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538037.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 1001002112138 its reverse (8312112001001), we get a palindrome (9313114113139).

The spelling of 1001002112138 in words is "one trillion, one billion, two million, one hundred twelve thousand, one hundred thirty-eight".