9121000 has 64 divisors (see below), whose sum is σ = 24410880. Its totient is φ = 3124800.

The previous prime is 9120997. The next prime is 9121003. The reversal of 9121000 is 1219.

It is an interprime number because it is at equal distance from previous prime (9120997) and next prime (9121003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6349 + ... + 7651.

It is an arithmetic number, because the mean of its divisors is an integer number (381420).

Almost surely, 2^9121000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12205440).

9121000 is an abundant number, since it is smaller than the sum of its proper divisors (15289880).

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

9121000 is a wasteful number, since it uses less digits than its factorization.

9121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 9121000 is about 3020.0993361146. The cubic root of 9121000 is about 208.9364213714.

Adding to 9121000 its reverse (1219), we get a palindrome (9122219).

The spelling of 9121000 in words is "nine million, one hundred twenty-one thousand".