420212011 has 4 divisors (see below), whose sum is σ = 422995024. Its totient is φ = 417429000.

The previous prime is 420211991. The next prime is 420212021. The reversal of 420212011 is 110212024.

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 420212011 - 2⁹ = 420211499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420211982 and 420212000.

It is not an unprimeable number, because it can be changed into a prime (420212021) 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, 1391280 + ... + 1391581.

It is an arithmetic number, because the mean of its divisors is an integer number (105748756).

Almost surely, 2^420212011 is an apocalyptic number.

420212011 is a deficient number, since it is larger than the sum of its proper divisors (2783013).

420212011 is a wasteful number, since it uses less digits than its factorization.

420212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783012.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 420212011 is about 20499.0734180840. The cubic root of 420212011 is about 749.0132273126.

Adding to 420212011 its sum of digits (13), we get a palindrome (420212024).

Adding to 420212011 its reverse (110212024), we get a palindrome (530424035).

The spelling of 420212011 in words is "four hundred twenty million, two hundred twelve thousand, eleven".