20124341111 has 6 divisors (see below), whose sum is σ = 23409947880. Its totient is φ = 17249435196.

The previous prime is 20124341101. The next prime is 20124341197. The reversal of 20124341111 is 11114342102.

It is a de Polignac number, because none of the positive numbers 2^k-20124341111 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 (20124341101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205350371 + ... + 205350468.

It is an arithmetic number, because the mean of its divisors is an integer number (3901657980).

Almost surely, 2^20124341111 is an apocalyptic number.

20124341111 is a deficient number, since it is larger than the sum of its proper divisors (3285606769).

20124341111 is an equidigital number, since it uses as much as digits as its factorization.

20124341111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410700853 (or 410700846 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20124341111 its reverse (11114342102), we get a palindrome (31238683213).

Subtracting from 20124341111 its reverse (11114342102), we obtain a palindrome (9009999009).

The spelling of 20124341111 in words is "twenty billion, one hundred twenty-four million, three hundred forty-one thousand, one hundred eleven".