212330145 has 16 divisors (see below), whose sum is σ = 342175680. Its totient is φ = 112426944.

The previous prime is 212330143. The next prime is 212330159. The reversal of 212330145 is 541033212.

It is not a de Polignac number, because 212330145 - 2¹ = 212330143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212330143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48834 + ... + 53003.

It is an arithmetic number, because the mean of its divisors is an integer number (21385980).

Almost surely, 2^212330145 is an apocalyptic number.

It is an amenable number.

212330145 is a deficient number, since it is larger than the sum of its proper divisors (129845535).

212330145 is a wasteful number, since it uses less digits than its factorization.

212330145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101984.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 212330145 is about 14571.5525940100. The cubic root of 212330145 is about 596.5825582195.

Adding to 212330145 its reverse (541033212), we get a palindrome (753363357).

The spelling of 212330145 in words is "two hundred twelve million, three hundred thirty thousand, one hundred forty-five".