421100811 has 24 divisors (see below), whose sum is σ = 625957280. Its totient is φ = 272595456.

The previous prime is 421100803. The next prime is 421100821. The reversal of 421100811 is 118001124.

It is not a de Polignac number, because 421100811 - 2³ = 421100803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421100821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223170 + ... + 225048.

Almost surely, 2^421100811 is an apocalyptic number.

421100811 is a deficient number, since it is larger than the sum of its proper divisors (204856469).

421100811 is a wasteful number, since it uses less digits than its factorization.

421100811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595 (or 2592 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 421100811 is about 20520.7409953929. The cubic root of 421100811 is about 749.5409404097.

Adding to 421100811 its reverse (118001124), we get a palindrome (539101935).

The spelling of 421100811 in words is "four hundred twenty-one million, one hundred thousand, eight hundred eleven".