131302000032221 has 4 divisors (see below), whose sum is σ = 131516195791452. Its totient is φ = 131087804272992.

The previous prime is 131302000032187. The next prime is 131302000032271. The reversal of 131302000032221 is 122230000203131.

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 66714835447225 + 64587164584996 = 8167915^2 + 8036614^2 .

It is a cyclic number.

It is not a de Polignac number, because 131302000032221 - 2⁶ = 131302000032157 is a prime.

It is a super-2 number, since 2×131302000032221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131302000032193 and 131302000032202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131302000032271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107097878696 + ... + 107097879921.

It is an arithmetic number, because the mean of its divisors is an integer number (32879048947863).

Almost surely, 2^{131302000032221} is an apocalyptic number.

It is an amenable number.

131302000032221 is a deficient number, since it is larger than the sum of its proper divisors (214195759231).

131302000032221 is an equidigital number, since it uses as much as digits as its factorization.

131302000032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214195759230.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131302000032221 its reverse (122230000203131), we get a palindrome (253532000235352).

The spelling of 131302000032221 in words is "one hundred thirty-one trillion, three hundred two billion, thirty-two thousand, two hundred twenty-one".