1211203313023 has 8 divisors (see below), whose sum is σ = 1321370387280. Its totient is φ = 1101045852480.

The previous prime is 1211203313009. The next prime is 1211203313039. The reversal of 1211203313023 is 3203133021121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211203313023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211203312985 and 1211203313003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211203313323) 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 7 ways as a sum of consecutive naturals, for example, 2138728 + ... + 2645101.

It is an arithmetic number, because the mean of its divisors is an integer number (165171298410).

Almost surely, 2^{1211203313023} is an apocalyptic number.

1211203313023 is a deficient number, since it is larger than the sum of its proper divisors (110167074257).

1211203313023 is a wasteful number, since it uses less digits than its factorization.

1211203313023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4806857.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1211203313023 its reverse (3203133021121), we get a palindrome (4414336334144).

The spelling of 1211203313023 in words is "one trillion, two hundred eleven billion, two hundred three million, three hundred thirteen thousand, twenty-three".