212021214 has 32 divisors (see below), whose sum is σ = 440678400. Its totient is φ = 67932000.

The previous prime is 212021213. The next prime is 212021237. The reversal of 212021214 is 412120212.

It is a junction number, because it is equal to n+sod(n) for n = 212021193 and 212021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021213) 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 15 ways as a sum of consecutive naturals, for example, 24312 + ... + 31860.

It is an arithmetic number, because the mean of its divisors is an integer number (13771200).

Almost surely, 2^212021214 is an apocalyptic number.

212021214 is an abundant number, since it is smaller than the sum of its proper divisors (228657186).

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

212021214 is a wasteful number, since it uses less digits than its factorization.

212021214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7736.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 212021214 is about 14560.9482520885. The cubic root of 212021214 is about 596.2930840097.

Adding to 212021214 its reverse (412120212), we get a palindrome (624141426).

The spelling of 212021214 in words is "two hundred twelve million, twenty-one thousand, two hundred fourteen".