212543032145 has 4 divisors (see below), whose sum is σ = 255051638580. Its totient is φ = 170034425712.

The previous prime is 212543032111. The next prime is 212543032153. The reversal of 212543032145 is 541230345212.

212543032145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90798563584 + 121744468561 = 301328^2 + 348919^2 .

It is a cyclic number.

It is not a de Polignac number, because 212543032145 - 2⁸ = 212543031889 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21254303210 + ... + 21254303219.

It is an arithmetic number, because the mean of its divisors is an integer number (63762909645).

Almost surely, 2^212543032145 is an apocalyptic number.

It is an amenable number.

212543032145 is a deficient number, since it is larger than the sum of its proper divisors (42508606435).

212543032145 is an equidigital number, since it uses as much as digits as its factorization.

212543032145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42508606434.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 212543032145 its reverse (541230345212), we get a palindrome (753773377357).

The spelling of 212543032145 in words is "two hundred twelve billion, five hundred forty-three million, thirty-two thousand, one hundred forty-five".