20001222220001 has 8 divisors (see below), whose sum is σ = 21904415989344. Its totient is φ = 18112178590720.

The previous prime is 20001222219989. The next prime is 20001222220003. The reversal of 20001222220001 is 10002222210002.

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 20001222220001 - 2³⁸ = 19726344313057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001222220003) 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, 3537532055 + ... + 3537537708.

It is an arithmetic number, because the mean of its divisors is an integer number (2738051998668).

Almost surely, 2^{20001222220001} is an apocalyptic number.

It is an amenable number.

20001222220001 is a deficient number, since it is larger than the sum of its proper divisors (1903193769343).

20001222220001 is a wasteful number, since it uses less digits than its factorization.

20001222220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075070031.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20001222220001 its reverse (10002222210002), we get a palindrome (30003444430003).

Subtracting from 20001222220001 its reverse (10002222210002), we obtain a palindrome (9999000009999).

The spelling of 20001222220001 in words is "twenty trillion, one billion, two hundred twenty-two million, two hundred twenty thousand, one".