331121020141 has 2 divisors, whose sum is σ = 331121020142. Its totient is φ = 331121020140.

The previous prime is 331121020133. The next prime is 331121020151. The reversal of 331121020141 is 141020121133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328271702500 + 2849317641 = 572950^2 + 53379^2 .

It is an emirp because it is prime and its reverse (141020121133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331121020141 - 2³ = 331121020133 is a prime.

It is a super-2 number, since 2×331121020141² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331121020151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165560510070 + 165560510071.

It is an arithmetic number, because the mean of its divisors is an integer number (165560510071).

Almost surely, 2^331121020141 is an apocalyptic number.

It is an amenable number.

331121020141 is a deficient number, since it is larger than the sum of its proper divisors (1).

331121020141 is an equidigital number, since it uses as much as digits as its factorization.

331121020141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 331121020141 its reverse (141020121133), we get a palindrome (472141141274).

The spelling of 331121020141 in words is "three hundred thirty-one billion, one hundred twenty-one million, twenty thousand, one hundred forty-one".