12001010120001 has 24 divisors (see below), whose sum is σ = 20853885590720. Its totient is φ = 6496787432736.

The previous prime is 12001010119999. The next prime is 12001010120093. The reversal of 12001010120001 is 10002101010021.

It is a happy number.

It is not a de Polignac number, because 12001010120001 - 2¹ = 12001010119999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12001010170001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5012952070 + ... + 5012954463.

Almost surely, 2^{12001010120001} is an apocalyptic number.

It is an amenable number.

12001010120001 is a deficient number, since it is larger than the sum of its proper divisors (8852875470719).

12001010120001 is a wasteful number, since it uses less digits than its factorization.

12001010120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10025906565 (or 10025906562 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12001010120001 its reverse (10002101010021), we get a palindrome (22003111130022).

The spelling of 12001010120001 in words is "twelve trillion, one billion, ten million, one hundred twenty thousand, one".