1223203121133 has 16 divisors (see below), whose sum is σ = 1864562864640. Its totient is φ = 698735349936.

The previous prime is 1223203121123. The next prime is 1223203121171. The reversal of 1223203121133 is 3311213023221.

It is not a de Polignac number, because 1223203121133 - 2²⁰ = 1223202072557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223203121123) 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, 9847735 + ... + 9971172.

It is an arithmetic number, because the mean of its divisors is an integer number (116535179040).

Almost surely, 2^{1223203121133} is an apocalyptic number.

It is an amenable number.

1223203121133 is a deficient number, since it is larger than the sum of its proper divisors (641359743507).

1223203121133 is a wasteful number, since it uses less digits than its factorization.

1223203121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19821856.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1223203121133 its reverse (3311213023221), we get a palindrome (4534416144354).

The spelling of 1223203121133 in words is "one trillion, two hundred twenty-three billion, two hundred three million, one hundred twenty-one thousand, one hundred thirty-three".