331121945020099 has 2 divisors, whose sum is σ = 331121945020100. Its totient is φ = 331121945020098.

The previous prime is 331121945020091. The next prime is 331121945020121. The reversal of 331121945020099 is 990020549121133.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331121945020099 - 2³ = 331121945020091 is a prime.

It is not a weakly prime, because it can be changed into another prime (331121945020091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165560972510049 + 165560972510050.

It is an arithmetic number, because the mean of its divisors is an integer number (165560972510050).

Almost surely, 2^{331121945020099} is an apocalyptic number.

331121945020099 is a deficient number, since it is larger than the sum of its proper divisors (1).

331121945020099 is an equidigital number, since it uses as much as digits as its factorization.

331121945020099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 331121945020099 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, nine hundred forty-five million, twenty thousand, ninety-nine".