420044421211 has 4 divisors (see below), whose sum is σ = 420175565352. Its totient is φ = 419913277072.

The previous prime is 420044421143. The next prime is 420044421217. The reversal of 420044421211 is 112124440024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 420044421211 - 2²⁷ = 419910203483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420044421217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65567266 + ... + 65573671.

It is an arithmetic number, because the mean of its divisors is an integer number (105043891338).

Almost surely, 2^420044421211 is an apocalyptic number.

420044421211 is a deficient number, since it is larger than the sum of its proper divisors (131144141).

420044421211 is a wasteful number, since it uses less digits than its factorization.

420044421211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131144140.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 420044421211 its reverse (112124440024), we get a palindrome (532168861235).

The spelling of 420044421211 in words is "four hundred twenty billion, forty-four million, four hundred twenty-one thousand, two hundred eleven".