121100441993 has 2 divisors, whose sum is σ = 121100441994. Its totient is φ = 121100441992.

The previous prime is 121100441989. The next prime is 121100442013. The reversal of 121100441993 is 399144001121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109827948409 + 11272493584 = 331403^2 + 106172^2 .

It is a cyclic number.

It is not a de Polignac number, because 121100441993 - 2² = 121100441989 is a prime.

It is not a weakly prime, because it can be changed into another prime (121100441923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550220996 + 60550220997.

It is an arithmetic number, because the mean of its divisors is an integer number (60550220997).

Almost surely, 2^121100441993 is an apocalyptic number.

It is an amenable number.

121100441993 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100441993 is an equidigital number, since it uses as much as digits as its factorization.

121100441993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 121100441993 in words is "one hundred twenty-one billion, one hundred million, four hundred forty-one thousand, nine hundred ninety-three".