12011030011031 has 4 divisors (see below), whose sum is σ = 12398482592064. Its totient is φ = 11623577430000.

The previous prime is 12011030010977. The next prime is 12011030011103. The reversal of 12011030011031 is 13011003011021.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011030011031 is a prime.

It is a super-2 number, since 2×12011030011031² (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 = 12011030010997 and 12011030011015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011030017031) 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, 193726290470 + ... + 193726290531.

It is an arithmetic number, because the mean of its divisors is an integer number (3099620648016).

Almost surely, 2^{12011030011031} is an apocalyptic number.

12011030011031 is a deficient number, since it is larger than the sum of its proper divisors (387452581033).

12011030011031 is an equidigital number, since it uses as much as digits as its factorization.

12011030011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387452581032.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 12011030011031 its reverse (13011003011021), we get a palindrome (25022033022052).

The spelling of 12011030011031 in words is "twelve trillion, eleven billion, thirty million, eleven thousand, thirty-one".