20221202320321 has 2 divisors, whose sum is σ = 20221202320322. Its totient is φ = 20221202320320.

The previous prime is 20221202320247. The next prime is 20221202320337. The reversal of 20221202320321 is 12302320212202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13579814606400 + 6641387713921 = 3685080^2 + 2577089^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221202320321 - 2³³ = 20212612385729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20221202320292 and 20221202320301.

It is not a weakly prime, because it can be changed into another prime (20221202320351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110601160160 + 10110601160161.

It is an arithmetic number, because the mean of its divisors is an integer number (10110601160161).

Almost surely, 2^{20221202320321} is an apocalyptic number.

It is an amenable number.

20221202320321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221202320321 is an equidigital number, since it uses as much as digits as its factorization.

20221202320321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20221202320321 its reverse (12302320212202), we get a palindrome (32523522532523).

The spelling of 20221202320321 in words is "twenty trillion, two hundred twenty-one billion, two hundred two million, three hundred twenty thousand, three hundred twenty-one".