20302111191 has 8 divisors (see below), whose sum is σ = 27070298224. Its totient is φ = 13534332480.

The previous prime is 20302111189. The next prime is 20302111223. The reversal of 20302111191 is 19111120302.

It is a happy number.

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

It is not a de Polignac number, because 20302111191 - 2¹ = 20302111189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302111691) 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, 43665 + ... + 206181.

It is an arithmetic number, because the mean of its divisors is an integer number (3383787278).

Almost surely, 2^20302111191 is an apocalyptic number.

20302111191 is a deficient number, since it is larger than the sum of its proper divisors (6768187033).

20302111191 is a wasteful number, since it uses less digits than its factorization.

20302111191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204161.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 20302111191 its reverse (19111120302), we get a palindrome (39413231493).

The spelling of 20302111191 in words is "twenty billion, three hundred two million, one hundred eleven thousand, one hundred ninety-one".