12000100001001 has 96 divisors (see below), whose sum is σ = 20439126731520. Its totient is φ = 6112675418112.

The previous prime is 12000100000943. The next prime is 12000100001017. The reversal of 12000100001001 is 10010000100021.

It is not a de Polignac number, because 12000100001001 - 2¹⁸ = 12000099738857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12000100001081) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 698118115 + ... + 698135303.

It is an arithmetic number, because the mean of its divisors is an integer number (212907570120).

Almost surely, 2^{12000100001001} is an apocalyptic number.

It is an amenable number.

12000100001001 is a deficient number, since it is larger than the sum of its proper divisors (8439026730519).

12000100001001 is a wasteful number, since it uses less digits than its factorization.

12000100001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22671 (or 22652 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 12000100001001 its reverse (10010000100021), we get a palindrome (22010100101022).

The spelling of 12000100001001 in words is "twelve trillion, one hundred million, one thousand, one".