20512224331 has 2 divisors, whose sum is σ = 20512224332. Its totient is φ = 20512224330.

The previous prime is 20512224329. The next prime is 20512224409. The reversal of 20512224331 is 13342221502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20512224331 - 2¹ = 20512224329 is a prime.

It is a super-2 number, since 2×20512224331² (a number of 21 digits) contains 22 as substring.

Together with 20512224329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20512224296 and 20512224305.

It is not a weakly prime, because it can be changed into another prime (20512227331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256112165 + 10256112166.

It is an arithmetic number, because the mean of its divisors is an integer number (10256112166).

Almost surely, 2^20512224331 is an apocalyptic number.

20512224331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20512224331 is an equidigital number, since it uses as much as digits as its factorization.

20512224331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20512224331 its reverse (13342221502), we get a palindrome (33854445833).

The spelling of 20512224331 in words is "twenty billion, five hundred twelve million, two hundred twenty-four thousand, three hundred thirty-one".