212808212 has 24 divisors (see below), whose sum is σ = 378134400. Its totient is φ = 104781600.

The previous prime is 212808209. The next prime is 212808251.

212808212 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79073 + ... + 81719.

It is an arithmetic number, because the mean of its divisors is an integer number (15755600).

Almost surely, 2^212808212 is an apocalyptic number.

It is an amenable number.

212808212 is a deficient number, since it is larger than the sum of its proper divisors (165326188).

212808212 is a wasteful number, since it uses less digits than its factorization.

212808212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951 (or 2949 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 212808212 is about 14587.9474909941. The cubic root of 212808212 is about 597.0299631341.

It can be divided in two parts, 21280 and 8212, that added together give a palindrome (29492).

The spelling of 212808212 in words is "two hundred twelve million, eight hundred eight thousand, two hundred twelve".