4231040321221 has 16 divisors (see below), whose sum is σ = 4928036371200. Its totient is φ = 3557221544448.

The previous prime is 4231040321191. The next prime is 4231040321309. The reversal of 4231040321221 is 1221230401324.

It is a cyclic number.

It is not a de Polignac number, because 4231040321221 - 2¹³ = 4231040313029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231040324221) 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, 153516 + ... + 2913013.

It is an arithmetic number, because the mean of its divisors is an integer number (308002273200).

Almost surely, 2^{4231040321221} is an apocalyptic number.

It is an amenable number.

4231040321221 is a deficient number, since it is larger than the sum of its proper divisors (696996049979).

4231040321221 is a wasteful number, since it uses less digits than its factorization.

4231040321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070308.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 4231040321221 its reverse (1221230401324), we get a palindrome (5452270722545).

The spelling of 4231040321221 in words is "four trillion, two hundred thirty-one billion, forty million, three hundred twenty-one thousand, two hundred twenty-one".