212421303 has 12 divisors (see below), whose sum is σ = 306958080. Its totient is φ = 141555456.

The previous prime is 212421241. The next prime is 212421323. The reversal of 212421303 is 303124212.

212421303 is a `hidden beast` number, since 212 + 421 + 30 + 3 = 666.

It is not a de Polignac number, because 212421303 - 2¹⁰ = 212420279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212421323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35850 + ... + 41352.

It is an arithmetic number, because the mean of its divisors is an integer number (25579840).

Almost surely, 2^212421303 is an apocalyptic number.

212421303 is a deficient number, since it is larger than the sum of its proper divisors (94536777).

212421303 is a wasteful number, since it uses less digits than its factorization.

212421303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9798 (or 9795 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212421303 is about 14574.6802023235. The cubic root of 212421303 is about 596.6679213412.

Adding to 212421303 its reverse (303124212), we get a palindrome (515545515).

The spelling of 212421303 in words is "two hundred twelve million, four hundred twenty-one thousand, three hundred three".