421212413441 has 4 divisors (see below), whose sum is σ = 421634894292. Its totient is φ = 420789932592.

The previous prime is 421212413411. The next prime is 421212413443. The reversal of 421212413441 is 144314212124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356643062416 + 64569351025 = 597196^2 + 254105^2 .

It is a cyclic number.

It is not a de Polignac number, because 421212413441 - 2³⁸ = 146334506497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421212413443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211238930 + ... + 211240923.

It is an arithmetic number, because the mean of its divisors is an integer number (105408723573).

Almost surely, 2^421212413441 is an apocalyptic number.

It is an amenable number.

421212413441 is a deficient number, since it is larger than the sum of its proper divisors (422480851).

421212413441 is an equidigital number, since it uses as much as digits as its factorization.

421212413441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422480850.

The product of its digits is 6144, while the sum is 29.

Adding to 421212413441 its reverse (144314212124), we get a palindrome (565526625565).

The spelling of 421212413441 in words is "four hundred twenty-one billion, two hundred twelve million, four hundred thirteen thousand, four hundred forty-one".