420212811 has 16 divisors (see below), whose sum is σ = 584025344. Its totient is φ = 268497504.

The previous prime is 420212803. The next prime is 420212831. The reversal of 420212811 is 118212024.

It is not a de Polignac number, because 420212811 - 2³ = 420212803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420212801) 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, 20815 + ... + 35688.

It is an arithmetic number, because the mean of its divisors is an integer number (36501584).

Almost surely, 2^420212811 is an apocalyptic number.

420212811 is a deficient number, since it is larger than the sum of its proper divisors (163812533).

420212811 is a wasteful number, since it uses less digits than its factorization.

420212811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56610.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 420212811 is about 20499.0929311519. The cubic root of 420212811 is about 749.0137026364.

Adding to 420212811 its reverse (118212024), we get a palindrome (538424835).

The spelling of 420212811 in words is "four hundred twenty million, two hundred twelve thousand, eight hundred eleven".