424211423221 has 16 divisors (see below), whose sum is σ = 431500253184. Its totient is φ = 416990662704.

The previous prime is 424211423191. The next prime is 424211423263. The reversal of 424211423221 is 122324112424.

It is a cyclic number.

It is not a de Polignac number, because 424211423221 - 2⁹ = 424211422709 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 424211423221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424211420221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12488166 + ... + 12522088.

It is an arithmetic number, because the mean of its divisors is an integer number (26968765824).

Almost surely, 2^424211423221 is an apocalyptic number.

It is an amenable number.

424211423221 is a deficient number, since it is larger than the sum of its proper divisors (7288829963).

424211423221 is a wasteful number, since it uses less digits than its factorization.

424211423221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34920.

The product of its digits is 6144, while the sum is 28.

Adding to 424211423221 its reverse (122324112424), we get a palindrome (546535535645).

The spelling of 424211423221 in words is "four hundred twenty-four billion, two hundred eleven million, four hundred twenty-three thousand, two hundred twenty-one".