212809214 has 16 divisors (see below), whose sum is σ = 322358400. Its totient is φ = 105361560.

The previous prime is 212809211. The next prime is 212809217. The reversal of 212809214 is 412908212.

It is an interprime number because it is at equal distance from previous prime (212809211) and next prime (212809217).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212809211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100337 + ... + 102435.

It is an arithmetic number, because the mean of its divisors is an integer number (20147400).

Almost surely, 2^212809214 is an apocalyptic number.

212809214 is a deficient number, since it is larger than the sum of its proper divisors (109549186).

212809214 is a wasteful number, since it uses less digits than its factorization.

212809214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 212809214 is about 14587.9818343731. The cubic root of 212809214 is about 597.0309001642.

The spelling of 212809214 in words is "two hundred twelve million, eight hundred nine thousand, two hundred fourteen".