12122001012001 has 4 divisors (see below), whose sum is σ = 12449622661012. Its totient is φ = 11794379362992.

The previous prime is 12122001011987. The next prime is 12122001012047. The reversal of 12122001012001 is 10021010022121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11617354163776 + 504646848225 = 3408424^2 + 710385^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122001012001 - 2¹¹ = 12122001009953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122001012061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163810824450 + ... + 163810824523.

It is an arithmetic number, because the mean of its divisors is an integer number (3112405665253).

Almost surely, 2^{12122001012001} is an apocalyptic number.

It is an amenable number.

12122001012001 is a deficient number, since it is larger than the sum of its proper divisors (327621649011).

12122001012001 is an equidigital number, since it uses as much as digits as its factorization.

12122001012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327621649010.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12122001012001 its reverse (10021010022121), we get a palindrome (22143011034122).

The spelling of 12122001012001 in words is "twelve trillion, one hundred twenty-two billion, one million, twelve thousand, one".