421224212 has 24 divisors (see below), whose sum is σ = 744817920. Its totient is φ = 208428480.

The previous prime is 421224179. The next prime is 421224227. The reversal of 421224212 is 212422124.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238589 + ... + 240347.

It is an arithmetic number, because the mean of its divisors is an integer number (31034080).

Almost surely, 2^421224212 is an apocalyptic number.

It is an amenable number.

421224212 is a deficient number, since it is larger than the sum of its proper divisors (323593708).

421224212 is a wasteful number, since it uses less digits than its factorization.

421224212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2349 counting only the distinct ones).

The product of its digits is 512, while the sum is 20.

The square root of 421224212 is about 20523.7475135512. The cubic root of 421224212 is about 749.6141493783.

Adding to 421224212 its reverse (212422124), we get a palindrome (633646336).

The spelling of 421224212 in words is "four hundred twenty-one million, two hundred twenty-four thousand, two hundred twelve".