195301021 has 2 divisors, whose sum is σ = 195301022. Its totient is φ = 195301020.

The previous prime is 195301013. The next prime is 195301063. The reversal of 195301021 is 120103591.

195301021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134304921 + 60996100 = 11589^2 + 7810^2 .

It is a cyclic number.

It is not a de Polignac number, because 195301021 - 2³ = 195301013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 195300983 and 195301001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195301621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97650510 + 97650511.

It is an arithmetic number, because the mean of its divisors is an integer number (97650511).

Almost surely, 2^195301021 is an apocalyptic number.

It is an amenable number.

195301021 is a deficient number, since it is larger than the sum of its proper divisors (1).

195301021 is an equidigital number, since it uses as much as digits as its factorization.

195301021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 195301021 is about 13975.0141681502. The cubic root of 195301021 is about 580.1872374086.

The spelling of 195301021 in words is "one hundred ninety-five million, three hundred one thousand, twenty-one".