20321203022047 has 2 divisors, whose sum is σ = 20321203022048. Its totient is φ = 20321203022046.

The previous prime is 20321203022009. The next prime is 20321203022171. The reversal of 20321203022047 is 74022030212302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20321203022047 - 2¹⁵ = 20321202989279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20321203022647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160601511023 + 10160601511024.

It is an arithmetic number, because the mean of its divisors is an integer number (10160601511024).

Almost surely, 2^{20321203022047} is an apocalyptic number.

20321203022047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321203022047 is an equidigital number, since it uses as much as digits as its factorization.

20321203022047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 20321203022047 its reverse (74022030212302), we get a palindrome (94343233234349).

The spelling of 20321203022047 in words is "twenty trillion, three hundred twenty-one billion, two hundred three million, twenty-two thousand, forty-seven".