11331131222123 has 4 divisors (see below), whose sum is σ = 11516887471728. Its totient is φ = 11145374972520.

The previous prime is 11331131222113. The next prime is 11331131222161. The reversal of 11331131222123 is 32122213113311.

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 11331131222123 - 2¹⁰ = 11331131221099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331131222092 and 11331131222101.

It is not an unprimeable number, because it can be changed into a prime (11331131222113) 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, 92878124711 + ... + 92878124832.

It is an arithmetic number, because the mean of its divisors is an integer number (2879221867932).

Almost surely, 2^{11331131222123} is an apocalyptic number.

11331131222123 is a deficient number, since it is larger than the sum of its proper divisors (185756249605).

11331131222123 is an equidigital number, since it uses as much as digits as its factorization.

11331131222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185756249604.

The product of its digits is 1296, while the sum is 26.

Adding to 11331131222123 its reverse (32122213113311), we get a palindrome (43453344335434).

The spelling of 11331131222123 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, two hundred twenty-two thousand, one hundred twenty-three".