131222112611 has 2 divisors, whose sum is σ = 131222112612. Its totient is φ = 131222112610.

The previous prime is 131222112607. The next prime is 131222112649. The reversal of 131222112611 is 116211222131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131222112611 - 2² = 131222112607 is a prime.

It is not a weakly prime, because it can be changed into another prime (131222115611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611056305 + 65611056306.

It is an arithmetic number, because the mean of its divisors is an integer number (65611056306).

Almost surely, 2^131222112611 is an apocalyptic number.

131222112611 is a deficient number, since it is larger than the sum of its proper divisors (1).

131222112611 is an equidigital number, since it uses as much as digits as its factorization.

131222112611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 23.

Adding to 131222112611 its reverse (116211222131), we get a palindrome (247433334742).

The spelling of 131222112611 in words is "one hundred thirty-one billion, two hundred twenty-two million, one hundred twelve thousand, six hundred eleven".