203222053421 has 2 divisors, whose sum is σ = 203222053422. Its totient is φ = 203222053420.

The previous prime is 203222053367. The next prime is 203222053501. The reversal of 203222053421 is 124350222302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140916901321 + 62305152100 = 375389^2 + 249610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203222053421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203222058421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101611026710 + 101611026711.

It is an arithmetic number, because the mean of its divisors is an integer number (101611026711).

Almost surely, 2^203222053421 is an apocalyptic number.

It is an amenable number.

203222053421 is a deficient number, since it is larger than the sum of its proper divisors (1).

203222053421 is an equidigital number, since it uses as much as digits as its factorization.

203222053421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 203222053421 its reverse (124350222302), we get a palindrome (327572275723).

The spelling of 203222053421 in words is "two hundred three billion, two hundred twenty-two million, fifty-three thousand, four hundred twenty-one".