131334101433221 has 2 divisors, whose sum is σ = 131334101433222. Its totient is φ = 131334101433220.

The previous prime is 131334101433181. The next prime is 131334101433229. The reversal of 131334101433221 is 122334101433131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100355815950625 + 30978285482596 = 10017775^2 + 5565814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131334101433221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131334101433229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65667050716610 + 65667050716611.

It is an arithmetic number, because the mean of its divisors is an integer number (65667050716611).

Almost surely, 2^{131334101433221} is an apocalyptic number.

It is an amenable number.

131334101433221 is a deficient number, since it is larger than the sum of its proper divisors (1).

131334101433221 is an equidigital number, since it uses as much as digits as its factorization.

131334101433221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 131334101433221 its reverse (122334101433131), we get a palindrome (253668202866352).

The spelling of 131334101433221 in words is "one hundred thirty-one trillion, three hundred thirty-four billion, one hundred one million, four hundred thirty-three thousand, two hundred twenty-one".