212043356 has 12 divisors (see below), whose sum is σ = 424086768. Its totient is φ = 90875712.

The previous prime is 212043343. The next prime is 212043361. The reversal of 212043356 is 653340212.

212043356 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 3786461 + ... + 3786516.

It is an arithmetic number, because the mean of its divisors is an integer number (35340564).

Almost surely, 2^212043356 is an apocalyptic number.

It is an amenable number.

212043356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212043356 is a wasteful number, since it uses less digits than its factorization.

212043356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572988 (or 7572986 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 212043356 is about 14561.7085536004. The cubic root of 212043356 is about 596.3138408350.

Adding to 212043356 its reverse (653340212), we get a palindrome (865383568).

The spelling of 212043356 in words is "two hundred twelve million, forty-three thousand, three hundred fifty-six".