12011120311 has 2 divisors, whose sum is σ = 12011120312. Its totient is φ = 12011120310.

The previous prime is 12011120309. The next prime is 12011120371. The reversal of 12011120311 is 11302111021.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (11302111021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12011120311 - 2¹ = 12011120309 is a prime.

It is a super-2 number, since 2×12011120311² (a number of 21 digits) contains 22 as substring.

Together with 12011120309, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12011120291 and 12011120300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011120371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005560155 + 6005560156.

It is an arithmetic number, because the mean of its divisors is an integer number (6005560156).

Almost surely, 2^12011120311 is an apocalyptic number.

12011120311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011120311 is an equidigital number, since it uses as much as digits as its factorization.

12011120311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12011120311 its reverse (11302111021), we get a palindrome (23313231332).

The spelling of 12011120311 in words is "twelve billion, eleven million, one hundred twenty thousand, three hundred eleven".