12331211012011 has 4 divisors (see below), whose sum is σ = 12331228546224. Its totient is φ = 12331193477800.

The previous prime is 12331211011993. The next prime is 12331211012093. The reversal of 12331211012011 is 11021011213321.

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 12331211012011 - 2²³ = 12331202623403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12331211012011.

It is not an unprimeable number, because it can be changed into a prime (12331211012311) 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, 7666120 + ... + 9134101.

It is an arithmetic number, because the mean of its divisors is an integer number (3082807136556).

Almost surely, 2^{12331211012011} is an apocalyptic number.

12331211012011 is a deficient number, since it is larger than the sum of its proper divisors (17534213).

12331211012011 is an equidigital number, since it uses as much as digits as its factorization.

12331211012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17534212.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 12331211012011 its reverse (11021011213321), we get a palindrome (23352222225332).

The spelling of 12331211012011 in words is "twelve trillion, three hundred thirty-one billion, two hundred eleven million, twelve thousand, eleven".