10001201120001 has 48 divisors (see below), whose sum is σ = 18260451349504. Its totient is φ = 5132781551232.

The previous prime is 10001201119997. The next prime is 10001201120081. The reversal of 10001201120001 is 10002110210001.

It is a happy number.

It is not a de Polignac number, because 10001201120001 - 2² = 10001201119997 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10001201120081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164989681 + ... + 165050286.

Almost surely, 2^{10001201120001} is an apocalyptic number.

It is an amenable number.

10001201120001 is a deficient number, since it is larger than the sum of its proper divisors (8259250229503).

10001201120001 is a wasteful number, since it uses less digits than its factorization.

10001201120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330040030 (or 330040027 counting only the distinct ones).

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

Adding to 10001201120001 its reverse (10002110210001), we get a palindrome (20003311330002).

The spelling of 10001201120001 in words is "ten trillion, one billion, two hundred one million, one hundred twenty thousand, one".