4231232121 has 16 divisors (see below), whose sum is σ = 5867491520. Its totient is φ = 2710048320.

The previous prime is 4231232107. The next prime is 4231232167. The reversal of 4231232121 is 1212321324.

It is not a de Polignac number, because 4231232121 - 2¹⁵ = 4231199353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4231232321) 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, 260986 + ... + 276723.

It is an arithmetic number, because the mean of its divisors is an integer number (366718220).

Almost surely, 2^4231232121 is an apocalyptic number.

It is an amenable number.

4231232121 is a deficient number, since it is larger than the sum of its proper divisors (1636259399).

4231232121 is a wasteful number, since it uses less digits than its factorization.

4231232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537816.

The product of its digits is 576, while the sum is 21.

The square root of 4231232121 is about 65047.9217269853. The cubic root of 4231232121 is about 1617.4180433651.

Adding to 4231232121 its reverse (1212321324), we get a palindrome (5443553445).

The spelling of 4231232121 in words is "four billion, two hundred thirty-one million, two hundred thirty-two thousand, one hundred twenty-one".