1213311202203 has 4 divisors (see below), whose sum is σ = 1617748269608. Its totient is φ = 808874134800.

The previous prime is 1213311202189. The next prime is 1213311202211. The reversal of 1213311202203 is 3022021133121.

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

It is not a de Polignac number, because 1213311202203 - 2¹⁸ = 1213310940059 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 1213311202203.

It is not an unprimeable number, because it can be changed into a prime (1213311202253) 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, 202218533698 + ... + 202218533703.

It is an arithmetic number, because the mean of its divisors is an integer number (404437067402).

Almost surely, 2^{1213311202203} is an apocalyptic number.

1213311202203 is a deficient number, since it is larger than the sum of its proper divisors (404437067405).

1213311202203 is an equidigital number, since it uses as much as digits as its factorization.

1213311202203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404437067404.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1213311202203 its reverse (3022021133121), we get a palindrome (4235332335324).

The spelling of 1213311202203 in words is "one trillion, two hundred thirteen billion, three hundred eleven million, two hundred two thousand, two hundred three".