1213033012203 has 4 divisors (see below), whose sum is σ = 1617377349608. Its totient is φ = 808688674800.

The previous prime is 1213033012141. The next prime is 1213033012229. The reversal of 1213033012203 is 3022103303121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1213033012203 - 2⁹ = 1213033011691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213033012203.

It is not an unprimeable number, because it can be changed into a prime (1213033012253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202172168698 + ... + 202172168703.

It is an arithmetic number, because the mean of its divisors is an integer number (404344337402).

Almost surely, 2^{1213033012203} is an apocalyptic number.

1213033012203 is a deficient number, since it is larger than the sum of its proper divisors (404344337405).

1213033012203 is an equidigital number, since it uses as much as digits as its factorization.

1213033012203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404344337404.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1213033012203 its reverse (3022103303121), we get a palindrome (4235136315324).

The spelling of 1213033012203 in words is "one trillion, two hundred thirteen billion, thirty-three million, twelve thousand, two hundred three".