331121021222011 has 2 divisors, whose sum is σ = 331121021222012. Its totient is φ = 331121021222010.

The previous prime is 331121021221999. The next prime is 331121021222113. The reversal of 331121021222011 is 110222120121133.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331121021222011 - 2⁵ = 331121021221979 is a prime.

It is a super-2 number, since 2×331121021222011² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331121024222011) 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 as a sum of consecutive naturals, namely, 165560510611005 + 165560510611006.

It is an arithmetic number, because the mean of its divisors is an integer number (165560510611006).

Almost surely, 2^{331121021222011} is an apocalyptic number.

331121021222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

331121021222011 is an equidigital number, since it uses as much as digits as its factorization.

331121021222011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 331121021222011 its reverse (110222120121133), we get a palindrome (441343141343144).

The spelling of 331121021222011 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, eleven".