331223103121 has 2 divisors, whose sum is σ = 331223103122. Its totient is φ = 331223103120.

The previous prime is 331223103089. The next prime is 331223103137. The reversal of 331223103121 is 121301322133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170453379600 + 160769723521 = 412860^2 + 400961^2 .

It is a cyclic number.

It is not a de Polignac number, because 331223103121 - 2⁵ = 331223103089 is a prime.

It is a super-2 number, since 2×331223103121² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331223103092 and 331223103101.

It is not a weakly prime, because it can be changed into another prime (331223103181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165611551560 + 165611551561.

It is an arithmetic number, because the mean of its divisors is an integer number (165611551561).

Almost surely, 2^331223103121 is an apocalyptic number.

It is an amenable number.

331223103121 is a deficient number, since it is larger than the sum of its proper divisors (1).

331223103121 is an equidigital number, since it uses as much as digits as its factorization.

331223103121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 331223103121 its reverse (121301322133), we get a palindrome (452524425254).

The spelling of 331223103121 in words is "three hundred thirty-one billion, two hundred twenty-three million, one hundred three thousand, one hundred twenty-one".