421133212 has 12 divisors (see below), whose sum is σ = 740477416. Its totient is φ = 209568240.

The previous prime is 421133183. The next prime is 421133213. The reversal of 421133212 is 212331124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421133212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421133213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248643 + ... + 250330.

Almost surely, 2^421133212 is an apocalyptic number.

It is an amenable number.

421133212 is a deficient number, since it is larger than the sum of its proper divisors (319344204).

421133212 is a wasteful number, since it uses less digits than its factorization.

421133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499188 (or 499186 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 421133212 is about 20521.5304497496. The cubic root of 421133212 is about 749.5601640354.

Adding to 421133212 its reverse (212331124), we get a palindrome (633464336).

The spelling of 421133212 in words is "four hundred twenty-one million, one hundred thirty-three thousand, two hundred twelve".