20204541111 has 8 divisors (see below), whose sum is σ = 26942335344. Its totient is φ = 13468220480.

The previous prime is 20204541101. The next prime is 20204541113. The reversal of 20204541111 is 11114540202.

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 20204541111 - 2⁹ = 20204540599 is a prime.

It is a super-2 number, since 2×20204541111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204541113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336000 + ... + 391541.

It is an arithmetic number, because the mean of its divisors is an integer number (3367791918).

Almost surely, 2^20204541111 is an apocalyptic number.

20204541111 is a deficient number, since it is larger than the sum of its proper divisors (6737794233).

20204541111 is an equidigital number, since it uses as much as digits as its factorization.

20204541111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736801.

The product of its (nonzero) digits is 320, while the sum is 21.

Subtracting from 20204541111 its reverse (11114540202), we obtain a palindrome (9090000909).

The spelling of 20204541111 in words is "twenty billion, two hundred four million, five hundred forty-one thousand, one hundred eleven".