1212353033503 has 16 divisors (see below), whose sum is σ = 1254637290816. Its totient is φ = 1170686280960.

The previous prime is 1212353033497. The next prime is 1212353033513. The reversal of 1212353033503 is 3053303532121.

It is a cyclic number.

It is not a de Polignac number, because 1212353033503 - 2⁹ = 1212353032991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212353033513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8088801 + ... + 8237317.

It is an arithmetic number, because the mean of its divisors is an integer number (78414830676).

Almost surely, 2^{1212353033503} is an apocalyptic number.

1212353033503 is a deficient number, since it is larger than the sum of its proper divisors (42284257313).

1212353033503 is a wasteful number, since it uses less digits than its factorization.

1212353033503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150594.

The product of its (nonzero) digits is 24300, while the sum is 31.

Adding to 1212353033503 its reverse (3053303532121), we get a palindrome (4265656565624).

The spelling of 1212353033503 in words is "one trillion, two hundred twelve billion, three hundred fifty-three million, thirty-three thousand, five hundred three".