423221013212221 has 8 divisors (see below), whose sum is σ = 483682489149824. Its totient is φ = 362759870072880.

The previous prime is 423221013212213. The next prime is 423221013212243. The reversal of 423221013212221 is 122212310122324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423221013212221 - 2³ = 423221013212213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423221013212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423221013252221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80468505 + ... + 85566478.

It is an arithmetic number, because the mean of its divisors is an integer number (60460311143728).

Almost surely, 2^{423221013212221} is an apocalyptic number.

It is an amenable number.

423221013212221 is a deficient number, since it is larger than the sum of its proper divisors (60461475937603).

423221013212221 is a wasteful number, since it uses less digits than its factorization.

423221013212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166399131.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 423221013212221 its reverse (122212310122324), we get a palindrome (545433323334545).

The spelling of 423221013212221 in words is "four hundred twenty-three trillion, two hundred twenty-one billion, thirteen million, two hundred twelve thousand, two hundred twenty-one".