20211000120001 has 8 divisors (see below), whose sum is σ = 20264568105600. Its totient is φ = 20157440400240.

The previous prime is 20211000119987. The next prime is 20211000120013. The reversal of 20211000120001 is 10002100011202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20211000120001 - 2⁷ = 20211000119873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211000120001.

It is not an unprimeable number, because it can be changed into a prime (20211000120061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2845720 + ... + 6965638.

It is an arithmetic number, because the mean of its divisors is an integer number (2533071013200).

Almost surely, 2^{20211000120001} is an apocalyptic number.

It is an amenable number.

20211000120001 is a deficient number, since it is larger than the sum of its proper divisors (53567985599).

20211000120001 is a wasteful number, since it uses less digits than its factorization.

20211000120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4132919.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20211000120001 its reverse (10002100011202), we get a palindrome (30213100131203).

The spelling of 20211000120001 in words is "twenty trillion, two hundred eleven billion, one hundred twenty thousand, one".