23041221 has 24 divisors (see below), whose sum is σ = 36618624. Its totient is φ = 12841920.

The previous prime is 23041201. The next prime is 23041223. The reversal of 23041221 is 12214032.

It is not a de Polignac number, because 23041221 - 2⁵ = 23041189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23041221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23041223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4116 + ... + 7938.

It is an arithmetic number, because the mean of its divisors is an integer number (1525776).

Almost surely, 2^23041221 is an apocalyptic number.

23041221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23041221 is a deficient number, since it is larger than the sum of its proper divisors (13577403).

23041221 is a wasteful number, since it uses less digits than its factorization.

23041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881 (or 3874 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 23041221 is about 4800.1271858150. The cubic root of 23041221 is about 284.5564908523.

Adding to 23041221 its reverse (12214032), we get a palindrome (35255253).

The spelling of 23041221 in words is "twenty-three million, forty-one thousand, two hundred twenty-one".