23001121 has 16 divisors (see below), whose sum is σ = 27175680. Its totient is φ = 19192320.

The previous prime is 23001109. The next prime is 23001137. The reversal of 23001121 is 12110032.

It is a cyclic number.

It is not a de Polignac number, because 23001121 - 2¹⁵ = 22968353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23001098 and 23001107.

It is not an unprimeable number, because it can be changed into a prime (23002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33841 + ... + 34513.

It is an arithmetic number, because the mean of its divisors is an integer number (1698480).

Almost surely, 2^23001121 is an apocalyptic number.

It is an amenable number.

23001121 is a deficient number, since it is larger than the sum of its proper divisors (4174559).

23001121 is a wasteful number, since it uses less digits than its factorization.

23001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 23001121 is about 4795.9483942178. The cubic root of 23001121 is about 284.3913181636.

Adding to 23001121 its reverse (12110032), we get a palindrome (35111153).

It can be divided in two parts, 230011 and 21, that added together give a palindrome (230032).

The spelling of 23001121 in words is "twenty-three million, one thousand, one hundred twenty-one".