20117305201 has 24 divisors (see below), whose sum is σ = 23973089184. Its totient is φ = 16823338560.

The previous prime is 20117305177. The next prime is 20117305223. The reversal of 20117305201 is 10250371102.

It is a happy number.

It is not a de Polignac number, because 20117305201 - 2¹³ = 20117297009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117308201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2040981 + ... + 2050813.

It is an arithmetic number, because the mean of its divisors is an integer number (998878716).

Almost surely, 2^20117305201 is an apocalyptic number.

It is an amenable number.

20117305201 is a deficient number, since it is larger than the sum of its proper divisors (3855783983).

20117305201 is an equidigital number, since it uses as much as digits as its factorization.

20117305201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10861 (or 10854 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

Adding to 20117305201 its reverse (10250371102), we get a palindrome (30367676303).

The spelling of 20117305201 in words is "twenty billion, one hundred seventeen million, three hundred five thousand, two hundred one".