23141221 has 16 divisors (see below), whose sum is σ = 25459200. Its totient is φ = 20952000.

The previous prime is 23141213. The next prime is 23141291. The reversal of 23141221 is 12214132.

It is a cyclic number.

It is not a de Polignac number, because 23141221 - 2³ = 23141213 is a prime.

It is a super-2 number, since 2×23141221² = 1071032218741682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23141195 and 23141204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23141291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59295 + ... + 59683.

It is an arithmetic number, because the mean of its divisors is an integer number (1591200).

Almost surely, 2^23141221 is an apocalyptic number.

It is an amenable number.

23141221 is a deficient number, since it is larger than the sum of its proper divisors (2317979).

23141221 is a wasteful number, since it uses less digits than its factorization.

23141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its digits is 96, while the sum is 16.

The square root of 23141221 is about 4810.5322990289. The cubic root of 23141221 is about 284.9675596604.

Adding to 23141221 its reverse (12214132), we get a palindrome (35355353).

The spelling of 23141221 in words is "twenty-three million, one hundred forty-one thousand, two hundred twenty-one".