20412140330221 has 2 divisors, whose sum is σ = 20412140330222. Its totient is φ = 20412140330220.

The previous prime is 20412140330191. The next prime is 20412140330249. The reversal of 20412140330221 is 12203304121402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11442564574596 + 8969575755625 = 3382686^2 + 2994925^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412140330221 - 2¹⁷ = 20412140199149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20412140330261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206070165110 + 10206070165111.

It is an arithmetic number, because the mean of its divisors is an integer number (10206070165111).

Almost surely, 2^{20412140330221} is an apocalyptic number.

It is an amenable number.

20412140330221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412140330221 is an equidigital number, since it uses as much as digits as its factorization.

20412140330221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20412140330221 its reverse (12203304121402), we get a palindrome (32615444451623).

The spelling of 20412140330221 in words is "twenty trillion, four hundred twelve billion, one hundred forty million, three hundred thirty thousand, two hundred twenty-one".