9901100 has 36 divisors (see below), whose sum is σ = 23441208. Its totient is φ = 3600000.

The previous prime is 9901097. The next prime is 9901103. The reversal of 9901100 is 11099.

It is an interprime number because it is at equal distance from previous prime (9901097) and next prime (9901103).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (9901103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3401 + ... + 5600.

Almost surely, 2^9901100 is an apocalyptic number.

It is an amenable number.

9901100 is an abundant number, since it is smaller than the sum of its proper divisors (13540108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9901100 is a wasteful number, since it uses less digits than its factorization.

9901100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9026 (or 9019 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 9901100 is about 3146.6013411298. The cubic root of 9901100 is about 214.7308693080.

Adding to 9901100 its reverse (11099), we get a palindrome (9912199).

It can be divided in two parts, 9901 and 100, that added together give a palindrome (10001).

The spelling of 9901100 in words is "nine million, nine hundred one thousand, one hundred".