9852001421 has 2 divisors, whose sum is σ = 9852001422. Its totient is φ = 9852001420.

The previous prime is 9852001363. The next prime is 9852001427. The reversal of 9852001421 is 1241002589.

9852001421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8576797321 + 1275204100 = 92611^2 + 35710^2 .

It is an emirp because it is prime and its reverse (1241002589) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9852001421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9852001427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4926000710 + 4926000711.

It is an arithmetic number, because the mean of its divisors is an integer number (4926000711).

Almost surely, 2^9852001421 is an apocalyptic number.

It is an amenable number.

9852001421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9852001421 is an equidigital number, since it uses as much as digits as its factorization.

9852001421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 9852001421 is about 99257.2487075881. The cubic root of 9852001421 is about 2143.7533790505.

The spelling of 9852001421 in words is "nine billion, eight hundred fifty-two million, one thousand, four hundred twenty-one".