212403212 has 24 divisors (see below), whose sum is σ = 425349120. Its totient is φ = 90913680.

The previous prime is 212403179. The next prime is 212403283. The reversal of 212403212 is 212304212.

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, 19637 + ... + 28467.

It is an arithmetic number, because the mean of its divisors is an integer number (17722880).

Almost surely, 2^212403212 is an apocalyptic number.

It is an amenable number.

212403212 is an abundant number, since it is smaller than the sum of its proper divisors (212945908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212403212 is a wasteful number, since it uses less digits than its factorization.

212403212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9701 (or 9699 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212403212 is about 14574.0595579955. The cubic root of 212403212 is about 596.6509823216.

Adding to 212403212 its reverse (212304212), we get a palindrome (424707424).

The spelling of 212403212 in words is "two hundred twelve million, four hundred three thousand, two hundred twelve".