9900201 has 16 divisors (see below), whose sum is σ = 13740800. Its totient is φ = 6334848.

The previous prime is 9900199. The next prime is 9900203. The reversal of 9900201 is 1020099.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9900199) and next prime (9900203).

It is not a de Polignac number, because 9900201 - 2¹ = 9900199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9900203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8205 + ... + 9333.

It is an arithmetic number, because the mean of its divisors is an integer number (858800).

Almost surely, 2^9900201 is an apocalyptic number.

It is an amenable number.

9900201 is a deficient number, since it is larger than the sum of its proper divisors (3840599).

9900201 is a wasteful number, since it uses less digits than its factorization.

9900201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 9900201 is about 3146.4584853451. The cubic root of 9900201 is about 214.7243700674.

It can be divided in two parts, 9900 and 201, that added together give a palindrome (10101).

The spelling of 9900201 in words is "nine million, nine hundred thousand, two hundred one".