9091121 has 8 divisors (see below), whose sum is σ = 9831360. Its totient is φ = 8356752.

The previous prime is 9091109. The next prime is 9091127. The reversal of 9091121 is 1211909.

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 9091121 - 2⁶ = 9091057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9091127) 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, 2090 + ... + 4748.

It is an arithmetic number, because the mean of its divisors is an integer number (1228920).

Almost surely, 2^9091121 is an apocalyptic number.

It is an amenable number.

9091121 is a deficient number, since it is larger than the sum of its proper divisors (740239).

9091121 is a wasteful number, since it uses less digits than its factorization.

9091121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 9091121 is about 3015.1485867201. The cubic root of 9091121 is about 208.7080238785.

It can be divided in two parts, 9091 and 121, that multiplied together give a palindrome (1100011).

The spelling of 9091121 in words is "nine million, ninety-one thousand, one hundred twenty-one".