203121212330 has 8 divisors (see below), whose sum is σ = 365618182212. Its totient is φ = 81248484928.

The previous prime is 203121212323. The next prime is 203121212407. The reversal of 203121212330 is 33212121302.

It can be written as a sum of positive squares in 2 ways, for example, as 202392914161 + 728298169 = 449881^2 + 26987^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 10156060607 + ... + 10156060626.

Almost surely, 2^203121212330 is an apocalyptic number.

203121212330 is a deficient number, since it is larger than the sum of its proper divisors (162496969882).

203121212330 is a wasteful number, since it uses less digits than its factorization.

203121212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20312121240.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203121212330 its reverse (33212121302), we get a palindrome (236333333632).

The spelling of 203121212330 in words is "two hundred three billion, one hundred twenty-one million, two hundred twelve thousand, three hundred thirty".