331121221113077 has 2 divisors, whose sum is σ = 331121221113078. Its totient is φ = 331121221113076.

The previous prime is 331121221113071. The next prime is 331121221113121. The reversal of 331121221113077 is 770311122121133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232377371357041 + 98743849756036 = 15243929^2 + 9936994^2 .

It is a cyclic number.

It is not a de Polignac number, because 331121221113077 - 2²⁰ = 331121220064501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331121221113071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165560610556538 + 165560610556539.

It is an arithmetic number, because the mean of its divisors is an integer number (165560610556539).

Almost surely, 2^{331121221113077} is an apocalyptic number.

It is an amenable number.

331121221113077 is a deficient number, since it is larger than the sum of its proper divisors (1).

331121221113077 is an equidigital number, since it uses as much as digits as its factorization.

331121221113077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The spelling of 331121221113077 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thirteen thousand, seventy-seven".