12311102220011 has 4 divisors (see below), whose sum is σ = 14069831108592. Its totient is φ = 10552373331432.

The previous prime is 12311102220007. The next prime is 12311102220019. The reversal of 12311102220011 is 11002220111321.

It is a happy number.

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 12311102220011 - 2² = 12311102220007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12311102220019) 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, 879364444280 + ... + 879364444293.

It is an arithmetic number, because the mean of its divisors is an integer number (3517457777148).

Almost surely, 2^{12311102220011} is an apocalyptic number.

12311102220011 is a deficient number, since it is larger than the sum of its proper divisors (1758728888581).

12311102220011 is an equidigital number, since it uses as much as digits as its factorization.

12311102220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758728888580.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12311102220011 its reverse (11002220111321), we get a palindrome (23313322331332).

The spelling of 12311102220011 in words is "twelve trillion, three hundred eleven billion, one hundred two million, two hundred twenty thousand, eleven".