243212021152 has 24 divisors (see below), whose sum is σ = 479145334500. Its totient is φ = 121524317184.

The previous prime is 243212021147. The next prime is 243212021191. The reversal of 243212021152 is 251120212342.

It can be written as a sum of positive squares in 2 ways, for example, as 209357493136 + 33854528016 = 457556^2 + 183996^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2504527 + ... + 2599822.

Almost surely, 2^243212021152 is an apocalyptic number.

It is an amenable number.

243212021152 is a deficient number, since it is larger than the sum of its proper divisors (235933313348).

243212021152 is a wasteful number, since it uses less digits than its factorization.

243212021152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105848 (or 5105840 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 243212021152 its reverse (251120212342), we get a palindrome (494332233494).

The spelling of 243212021152 in words is "two hundred forty-three billion, two hundred twelve million, twenty-one thousand, one hundred fifty-two".