23232121 has 12 divisors (see below), whose sum is σ = 25802532. Its totient is φ = 20900000.

The previous prime is 23232119. The next prime is 23232127. The reversal of 23232121 is 12123232.

23232121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 12702096 + 10530025 = 3564^2 + 3245^2 .

It is not a de Polignac number, because 23232121 - 2¹ = 23232119 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23232095 and 23232104.

It is not an unprimeable number, because it can be changed into a prime (23232127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11271 + ... + 13171.

It is an arithmetic number, because the mean of its divisors is an integer number (2150211).

Almost surely, 2^23232121 is an apocalyptic number.

It is an amenable number.

23232121 is a deficient number, since it is larger than the sum of its proper divisors (2570411).

23232121 is a wasteful number, since it uses less digits than its factorization.

23232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024 (or 2013 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 23232121 is about 4819.9710580044. The cubic root of 23232121 is about 285.3401949697.

Adding to 23232121 its reverse (12123232), we get a palindrome (35355353).

Subtracting from 23232121 its reverse (12123232), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 2323 and 2121, that added together give a palindrome (4444).

The spelling of 23232121 in words is "twenty-three million, two hundred thirty-two thousand, one hundred twenty-one".