20111000111201 has 8 divisors (see below), whose sum is σ = 20761929662208. Its totient is φ = 19460207286000.

The previous prime is 20111000111173. The next prime is 20111000111207. The reversal of 20111000111201 is 10211100011102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111000111201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111000111207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33882470 + ... + 34470911.

It is an arithmetic number, because the mean of its divisors is an integer number (2595241207776).

Almost surely, 2^{20111000111201} is an apocalyptic number.

It is an amenable number.

20111000111201 is a deficient number, since it is larger than the sum of its proper divisors (650929551007).

20111000111201 is an equidigital number, since it uses as much as digits as its factorization.

20111000111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68362903.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20111000111201 its reverse (10211100011102), we get a palindrome (30322100122303).

The spelling of 20111000111201 in words is "twenty trillion, one hundred eleven billion, one hundred eleven thousand, two hundred one".