203132030220221 has 2 divisors, whose sum is σ = 203132030220222. Its totient is φ = 203132030220220.

The previous prime is 203132030220209. The next prime is 203132030220269. The reversal of 203132030220221 is 122022030231302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123476655120025 + 79655375100196 = 11112005^2 + 8924986^2 .

It is a cyclic number.

It is not a de Polignac number, because 203132030220221 - 2¹⁰ = 203132030219197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203132030220421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101566015110110 + 101566015110111.

It is an arithmetic number, because the mean of its divisors is an integer number (101566015110111).

Almost surely, 2^{203132030220221} is an apocalyptic number.

It is an amenable number.

203132030220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

203132030220221 is an equidigital number, since it uses as much as digits as its factorization.

203132030220221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 203132030220221 its reverse (122022030231302), we get a palindrome (325154060451523).

The spelling of 203132030220221 in words is "two hundred three trillion, one hundred thirty-two billion, thirty million, two hundred twenty thousand, two hundred twenty-one".