131344223422121 has 4 divisors (see below), whose sum is σ = 133822416316932. Its totient is φ = 128866030527312.

The previous prime is 131344223422103. The next prime is 131344223422151. The reversal of 131344223422121 is 121224322443131.

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 43992974598400 + 87351248823721 = 6632720^2 + 9346189^2 .

It is a cyclic number.

It is not a de Polignac number, because 131344223422121 - 2¹⁴ = 131344223405737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131344223422151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239096447326 + ... + 1239096447431.

It is an arithmetic number, because the mean of its divisors is an integer number (33455604079233).

Almost surely, 2^{131344223422121} is an apocalyptic number.

It is an amenable number.

131344223422121 is a deficient number, since it is larger than the sum of its proper divisors (2478192894811).

131344223422121 is an equidigital number, since it uses as much as digits as its factorization.

131344223422121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478192894810.

The product of its digits is 55296, while the sum is 35.

Adding to 131344223422121 its reverse (121224322443131), we get a palindrome (252568545865252).

The spelling of 131344223422121 in words is "one hundred thirty-one trillion, three hundred forty-four billion, two hundred twenty-three million, four hundred twenty-two thousand, one hundred twenty-one".