243042020212 has 6 divisors (see below), whose sum is σ = 425323535378. Its totient is φ = 121521010104.

The previous prime is 243042020209. The next prime is 243042020227. The reversal of 243042020212 is 212020240342.

It can be written as a sum of positive squares in only one way, i.e., 200207922916 + 42834097296 = 447446^2 + 206964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30380252523 + ... + 30380252530.

Almost surely, 2^243042020212 is an apocalyptic number.

It is an amenable number.

243042020212 is a deficient number, since it is larger than the sum of its proper divisors (182281515166).

243042020212 is a wasteful number, since it uses less digits than its factorization.

243042020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60760505057 (or 60760505055 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 243042020212 its reverse (212020240342), we get a palindrome (455062260554).

The spelling of 243042020212 in words is "two hundred forty-three billion, forty-two million, twenty thousand, two hundred twelve".