203212402321 has 2 divisors, whose sum is σ = 203212402322. Its totient is φ = 203212402320.

The previous prime is 203212402313. The next prime is 203212402339. The reversal of 203212402321 is 123204212302.

203212402321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198844646400 + 4367755921 = 445920^2 + 66089^2 .

It is a cyclic number.

It is not a de Polignac number, because 203212402321 - 2³ = 203212402313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203212402292 and 203212402301.

It is not a weakly prime, because it can be changed into another prime (203212402301) by changing a digit.

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 as a sum of consecutive naturals, namely, 101606201160 + 101606201161.

It is an arithmetic number, because the mean of its divisors is an integer number (101606201161).

Almost surely, 2^203212402321 is an apocalyptic number.

It is an amenable number.

203212402321 is a deficient number, since it is larger than the sum of its proper divisors (1).

203212402321 is an equidigital number, since it uses as much as digits as its factorization.

203212402321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 203212402321 its reverse (123204212302), we get a palindrome (326416614623).

The spelling of 203212402321 in words is "two hundred three billion, two hundred twelve million, four hundred two thousand, three hundred twenty-one".