423213430221 has 12 divisors (see below), whose sum is σ = 617021451072. Its totient is φ = 279505442376.

The previous prime is 423213430201. The next prime is 423213430223. The reversal of 423213430221 is 122034312324.

423213430221 is a `hidden beast` number, since 4 + 2 + 3 + 2 + 1 + 3 + 430 + 221 = 666.

It is not a de Polignac number, because 423213430221 - 2¹³ = 423213422029 is a prime.

It is a super-2 number, since 2×423213430221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423213430223) 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, 219736021 + ... + 219737946.

It is an arithmetic number, because the mean of its divisors is an integer number (51418454256).

Almost surely, 2^423213430221 is an apocalyptic number.

It is an amenable number.

423213430221 is a deficient number, since it is larger than the sum of its proper divisors (193808020851).

423213430221 is a wasteful number, since it uses less digits than its factorization.

423213430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439474080 (or 439474077 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 423213430221 its reverse (122034312324), we get a palindrome (545247742545).

The spelling of 423213430221 in words is "four hundred twenty-three billion, two hundred thirteen million, four hundred thirty thousand, two hundred twenty-one".