421222475552 has 54 divisors (see below), whose sum is σ = 857127302577. Its totient is φ = 203762256000.

The previous prime is 421222475537. The next prime is 421222475561. The reversal of 421222475552 is 255574222124.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 417207479056 + 4014996496 = 645916^2 + 63364^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=458924.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 113811302 + ... + 113815002.

Almost surely, 2^421222475552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421222475552

421222475552 is an abundant number, since it is smaller than the sum of its proper divisors (435904827025).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421222475552 is an frugal number, since it uses more digits than its factorization.

421222475552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7474 (or 3734 counting only the distinct ones).

The product of its digits is 448000, while the sum is 41.

Adding to 421222475552 its reverse (255574222124), we get a palindrome (676796697676).

The spelling of 421222475552 in words is "four hundred twenty-one billion, two hundred twenty-two million, four hundred seventy-five thousand, five hundred fifty-two".