111203210453 has 2 divisors, whose sum is σ = 111203210454. Its totient is φ = 111203210452.

The previous prime is 111203210309. The next prime is 111203210467. The reversal of 111203210453 is 354012302111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59622895684 + 51580314769 = 244178^2 + 227113^2 .

It is a cyclic number.

It is not a de Polignac number, because 111203210453 - 2⁸ = 111203210197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111203200453) 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, 55601605226 + 55601605227.

It is an arithmetic number, because the mean of its divisors is an integer number (55601605227).

Almost surely, 2^111203210453 is an apocalyptic number.

It is an amenable number.

111203210453 is a deficient number, since it is larger than the sum of its proper divisors (1).

111203210453 is an equidigital number, since it uses as much as digits as its factorization.

111203210453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 111203210453 its reverse (354012302111), we get a palindrome (465215512564).

The spelling of 111203210453 in words is "one hundred eleven billion, two hundred three million, two hundred ten thousand, four hundred fifty-three".