11331211131203 has 4 divisors (see below), whose sum is σ = 11331556217520. Its totient is φ = 11330866044888.

The previous prime is 11331211131187. The next prime is 11331211131221. The reversal of 11331211131203 is 30213111213311.

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

It is a cyclic number.

It is not a de Polignac number, because 11331211131203 - 2⁴ = 11331211131187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331211131293) 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, 172493900 + ... + 172559577.

It is an arithmetic number, because the mean of its divisors is an integer number (2832889054380).

Almost surely, 2^{11331211131203} is an apocalyptic number.

11331211131203 is a deficient number, since it is larger than the sum of its proper divisors (345086317).

11331211131203 is an equidigital number, since it uses as much as digits as its factorization.

11331211131203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345086316.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 11331211131203 its reverse (30213111213311), we get a palindrome (41544322344514).

The spelling of 11331211131203 in words is "eleven trillion, three hundred thirty-one billion, two hundred eleven million, one hundred thirty-one thousand, two hundred three".