131222110009 has 4 divisors (see below), whose sum is σ = 131241332260. Its totient is φ = 131202887760.

The previous prime is 131222109983. The next prime is 131222110027. The reversal of 131222110009 is 900011222131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97097676025 + 34124433984 = 311605^2 + 184728^2 .

It is a cyclic number.

It is not a de Polignac number, because 131222110009 - 2²¹ = 131220012857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131222110079) 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 in 3 ways as a sum of consecutive naturals, for example, 9600882 + ... + 9614539.

It is an arithmetic number, because the mean of its divisors is an integer number (32810333065).

Almost surely, 2^131222110009 is an apocalyptic number.

It is an amenable number.

131222110009 is a deficient number, since it is larger than the sum of its proper divisors (19222251).

131222110009 is an equidigital number, since it uses as much as digits as its factorization.

131222110009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19222250.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 131222110009 in words is "one hundred thirty-one billion, two hundred twenty-two million, one hundred ten thousand, nine".