20000000120001 has 16 divisors (see below), whose sum is σ = 29091493217280. Its totient is φ = 12120968880720.

The previous prime is 20000000119993. The next prime is 20000000120017. The reversal of 20000000120001 is 10002100000002.

It is a happy number.

It is not a de Polignac number, because 20000000120001 - 2³ = 20000000119993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20000000120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4407061 + ... + 7708578.

It is an arithmetic number, because the mean of its divisors is an integer number (1818218326080).

Almost surely, 2^{20000000120001} is an apocalyptic number.

It is an amenable number.

20000000120001 is a deficient number, since it is larger than the sum of its proper divisors (9091493097279).

20000000120001 is a wasteful number, since it uses less digits than its factorization.

20000000120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12165676.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 20000000120001 its reverse (10002100000002), we get a palindrome (30002100120003).

It can be divided in two parts, 200000001 and 20001, that added together give a palindrome (200020002).

The spelling of 20000000120001 in words is "twenty trillion, one hundred twenty thousand, one".