102020330221 has 2 divisors, whose sum is σ = 102020330222. Its totient is φ = 102020330220.

The previous prime is 102020330141. The next prime is 102020330233. The reversal of 102020330221 is 122033020201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79941342121 + 22078988100 = 282739^2 + 148590^2 .

It is a cyclic number.

It is not a de Polignac number, because 102020330221 - 2⁹ = 102020329709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102020330195 and 102020330204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102020330261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010165110 + 51010165111.

It is an arithmetic number, because the mean of its divisors is an integer number (51010165111).

Almost surely, 2^102020330221 is an apocalyptic number.

It is an amenable number.

102020330221 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020330221 is an equidigital number, since it uses as much as digits as its factorization.

102020330221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 102020330221 its reverse (122033020201), we get a palindrome (224053350422).

The spelling of 102020330221 in words is "one hundred two billion, twenty million, three hundred thirty thousand, two hundred twenty-one".