20001110220001 has 16 divisors (see below), whose sum is σ = 21733473484800. Its totient is φ = 18336743442000.

The previous prime is 20001110219983. The next prime is 20001110220023. The reversal of 20001110220001 is 10002201110002.

It is a cyclic number.

It is not a de Polignac number, because 20001110220001 - 2²⁵ = 20001076665569 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 20001110220001.

It is not an unprimeable number, because it can be changed into a prime (20001110220401) 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, 25739910 + ... + 26505568.

It is an arithmetic number, because the mean of its divisors is an integer number (1358342092800).

Almost surely, 2^{20001110220001} is an apocalyptic number.

It is an amenable number.

20001110220001 is a deficient number, since it is larger than the sum of its proper divisors (1732363264799).

20001110220001 is a wasteful number, since it uses less digits than its factorization.

20001110220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810060.

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

Adding to 20001110220001 its reverse (10002201110002), we get a palindrome (30003311330003).

The spelling of 20001110220001 in words is "twenty trillion, one billion, one hundred ten million, two hundred twenty thousand, one".