12011023101331 has 4 divisors (see below), whose sum is σ = 12017049707992. Its totient is φ = 12004996494672.

The previous prime is 12011023101323. The next prime is 12011023101347. The reversal of 12011023101331 is 13310132011021.

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 12011023101331 - 2³ = 12011023101323 is a prime.

It is a super-2 number, since 2×12011023101331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011023101299 and 12011023101308.

It is not an unprimeable number, because it can be changed into a prime (12011023401331) 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 3 ways as a sum of consecutive naturals, for example, 3013300341 + ... + 3013304326.

It is an arithmetic number, because the mean of its divisors is an integer number (3004262426998).

Almost surely, 2^{12011023101331} is an apocalyptic number.

12011023101331 is a deficient number, since it is larger than the sum of its proper divisors (6026606661).

12011023101331 is an equidigital number, since it uses as much as digits as its factorization.

12011023101331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026606660.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 12011023101331 its reverse (13310132011021), we get a palindrome (25321155112352).

The spelling of 12011023101331 in words is "twelve trillion, eleven billion, twenty-three million, one hundred one thousand, three hundred thirty-one".