331121212206937 has 2 divisors, whose sum is σ = 331121212206938. Its totient is φ = 331121212206936.

The previous prime is 331121212206803. The next prime is 331121212206947. The reversal of 331121212206937 is 739602212121133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301962248997721 + 29158963209216 = 17377061^2 + 5399904^2 .

It is a cyclic number.

It is not a de Polignac number, because 331121212206937 - 2¹⁵ = 331121212174169 is a prime.

It is a super-2 number, since 2×331121212206937² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331121212206893 and 331121212206902.

It is not a weakly prime, because it can be changed into another prime (331121212206947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165560606103468 + 165560606103469.

It is an arithmetic number, because the mean of its divisors is an integer number (165560606103469).

Almost surely, 2^{331121212206937} is an apocalyptic number.

It is an amenable number.

331121212206937 is a deficient number, since it is larger than the sum of its proper divisors (1).

331121212206937 is an equidigital number, since it uses as much as digits as its factorization.

331121212206937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 331121212206937 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, two hundred twelve million, two hundred six thousand, nine hundred thirty-seven".