20321222301109 has 2 divisors, whose sum is σ = 20321222301110. Its totient is φ = 20321222301108.

The previous prime is 20321222301077. The next prime is 20321222301137. The reversal of 20321222301109 is 90110322212302.

It is an a-pointer prime, because the next prime (20321222301137) can be obtained adding 20321222301109 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17313529868209 + 3007692432900 = 4160953^2 + 1734270^2 .

It is a cyclic number.

It is not a de Polignac number, because 20321222301109 - 2⁵ = 20321222301077 is a prime.

It is a super-2 number, since 2×20321222301109² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20321222301179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160611150554 + 10160611150555.

It is an arithmetic number, because the mean of its divisors is an integer number (10160611150555).

Almost surely, 2^{20321222301109} is an apocalyptic number.

It is an amenable number.

20321222301109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321222301109 is an equidigital number, since it uses as much as digits as its factorization.

20321222301109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 20321222301109 in words is "twenty trillion, three hundred twenty-one billion, two hundred twenty-two million, three hundred one thousand, one hundred nine".