20012000022001 has 16 divisors (see below), whose sum is σ = 21698044684288. Its totient is φ = 18347008680000.

The previous prime is 20012000021989. The next prime is 20012000022061. The reversal of 20012000022001 is 10022000021002.

It is not a de Polignac number, because 20012000022001 - 2³⁷ = 19874561068529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012000022061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2595376 + ... + 6838126.

It is an arithmetic number, because the mean of its divisors is an integer number (1356127792768).

Almost surely, 2^{20012000022001} is an apocalyptic number.

It is an amenable number.

20012000022001 is a deficient number, since it is larger than the sum of its proper divisors (1686044662287).

20012000022001 is a wasteful number, since it uses less digits than its factorization.

20012000022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245232.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20012000022001 its reverse (10022000021002), we get a palindrome (30034000043003).

Subtracting from 20012000022001 its reverse (10022000021002), we obtain a palindrome (9990000000999).

The spelling of 20012000022001 in words is "twenty trillion, twelve billion, twenty-two thousand, one".