1211224304203 has 2 divisors, whose sum is σ = 1211224304204. Its totient is φ = 1211224304202.

The previous prime is 1211224304197. The next prime is 1211224304231. The reversal of 1211224304203 is 3024034221121.

It is a weak prime.

It is an emirp because it is prime and its reverse (3024034221121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211224304203 - 2¹³ = 1211224296011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211224304243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605612152101 + 605612152102.

It is an arithmetic number, because the mean of its divisors is an integer number (605612152102).

Almost surely, 2^{1211224304203} is an apocalyptic number.

1211224304203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211224304203 is an equidigital number, since it uses as much as digits as its factorization.

1211224304203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1211224304203 its reverse (3024034221121), we get a palindrome (4235258525324).

The spelling of 1211224304203 in words is "one trillion, two hundred eleven billion, two hundred twenty-four million, three hundred four thousand, two hundred three".