212342229 has 40 divisors (see below), whose sum is σ = 351302688. Its totient is φ = 126735840.

The previous prime is 212342209. The next prime is 212342237. The reversal of 212342229 is 922243212.

212342229 is a `hidden beast` number, since 212 + 3 + 422 + 29 = 666.

It is not a de Polignac number, because 212342229 - 2⁵ = 212342197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212342209) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 57919 + ... + 61475.

Almost surely, 2^212342229 is an apocalyptic number.

It is an amenable number.

212342229 is a deficient number, since it is larger than the sum of its proper divisors (138960459).

212342229 is a wasteful number, since it uses less digits than its factorization.

212342229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647 (or 3638 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 212342229 is about 14571.9672316403. The cubic root of 212342229 is about 596.5938754488.

The spelling of 212342229 in words is "two hundred twelve million, three hundred forty-two thousand, two hundred twenty-nine".