20112324191 has 2 divisors, whose sum is σ = 20112324192. Its totient is φ = 20112324190.

The previous prime is 20112324179. The next prime is 20112324269. The reversal of 20112324191 is 19142321102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112324191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112324191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112324161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056162095 + 10056162096.

It is an arithmetic number, because the mean of its divisors is an integer number (10056162096).

Almost surely, 2^20112324191 is an apocalyptic number.

20112324191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112324191 is an equidigital number, since it uses as much as digits as its factorization.

20112324191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 20112324191 its reverse (19142321102), we get a palindrome (39254645293).

The spelling of 20112324191 in words is "twenty billion, one hundred twelve million, three hundred twenty-four thousand, one hundred ninety-one".