424224122421 has 16 divisors (see below), whose sum is σ = 617086356480. Its totient is φ = 257091742320.

The previous prime is 424224122411. The next prime is 424224122453. The reversal of 424224122421 is 124221422424.

It is not a de Polignac number, because 424224122421 - 2⁷ = 424224122293 is a prime.

It is a super-2 number, since 2×424224122421² (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 (424224122401) 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, 297970 + ... + 968108.

It is an arithmetic number, because the mean of its divisors is an integer number (38567897280).

Almost surely, 2^424224122421 is an apocalyptic number.

It is an amenable number.

424224122421 is a deficient number, since it is larger than the sum of its proper divisors (192862234059).

424224122421 is a wasteful number, since it uses less digits than its factorization.

424224122421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689336.

The product of its digits is 16384, while the sum is 30.

Adding to 424224122421 its reverse (124221422424), we get a palindrome (548445544845).

It can be divided in two parts, 424224 and 122421, that added together give a palindrome (546645).

The spelling of 424224122421 in words is "four hundred twenty-four billion, two hundred twenty-four million, one hundred twenty-two thousand, four hundred twenty-one".