231224010421 has 16 divisors (see below), whose sum is σ = 246317155200. Its totient is φ = 216426988800.

The previous prime is 231224010403. The next prime is 231224010449. The reversal of 231224010421 is 124010422132.

It is a cyclic number.

It is not a de Polignac number, because 231224010421 - 2²⁵ = 231190455989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231224010392 and 231224010401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231224010491) 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, 2182056 + ... + 2285566.

It is an arithmetic number, because the mean of its divisors is an integer number (15394822200).

Almost surely, 2^231224010421 is an apocalyptic number.

It is an amenable number.

231224010421 is a deficient number, since it is larger than the sum of its proper divisors (15093144779).

231224010421 is a wasteful number, since it uses less digits than its factorization.

231224010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104940.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 231224010421 its reverse (124010422132), we get a palindrome (355234432553).

The spelling of 231224010421 in words is "two hundred thirty-one billion, two hundred twenty-four million, ten thousand, four hundred twenty-one".