243121213010 has 32 divisors (see below), whose sum is σ = 471305081520. Its totient is φ = 89763268608.

The previous prime is 243121213009. The next prime is 243121213021. The reversal of 243121213010 is 10312121342.

243121213010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 400440121 + 242720772889 = 20011^2 + 492667^2 .

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 15 ways as a sum of consecutive naturals, for example, 3579446 + ... + 3646734.

Almost surely, 2^243121213010 is an apocalyptic number.

243121213010 is a deficient number, since it is larger than the sum of its proper divisors (228183868510).

243121213010 is a wasteful number, since it uses less digits than its factorization.

243121213010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95102.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 243121213010 its reverse (10312121342), we get a palindrome (253433334352).

The spelling of 243121213010 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred thirteen thousand, ten".