131121132011 has 2 divisors, whose sum is σ = 131121132012. Its totient is φ = 131121132010.

The previous prime is 131121131989. The next prime is 131121132013. The reversal of 131121132011 is 110231121131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131121132011 is a prime.

Together with 131121132013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131121132013) 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 as a sum of consecutive naturals, namely, 65560566005 + 65560566006.

It is an arithmetic number, because the mean of its divisors is an integer number (65560566006).

Almost surely, 2^131121132011 is an apocalyptic number.

131121132011 is a deficient number, since it is larger than the sum of its proper divisors (1).

131121132011 is an equidigital number, since it uses as much as digits as its factorization.

131121132011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131121132011 its reverse (110231121131), we get a palindrome (241352253142).

The spelling of 131121132011 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred thirty-two thousand, eleven".