9991202201 has 8 divisors (see below), whose sum is σ = 10005457608. Its totient is φ = 9976960000.

The previous prime is 9991202173. The next prime is 9991202203. The reversal of 9991202201 is 1022021999.

It can be written as a sum of positive squares in 4 ways, for example, as 2804232025 + 7186970176 = 52955^2 + 84776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9991202201 - 2¹⁰ = 9991201177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9991202203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3810671 + ... + 3813291.

It is an arithmetic number, because the mean of its divisors is an integer number (1250682201).

Almost surely, 2^9991202201 is an apocalyptic number.

It is an amenable number.

9991202201 is a deficient number, since it is larger than the sum of its proper divisors (14255407).

9991202201 is a wasteful number, since it uses less digits than its factorization.

9991202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6603.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 9991202201 is about 99956.0013255832. The cubic root of 9991202201 is about 2153.8026952115.

The spelling of 9991202201 in words is "nine billion, nine hundred ninety-one million, two hundred two thousand, two hundred one".