121004243057 has 2 divisors, whose sum is σ = 121004243058. Its totient is φ = 121004243056.

The previous prime is 121004243021. The next prime is 121004243141. The reversal of 121004243057 is 750342400121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114352861921 + 6651381136 = 338161^2 + 81556^2 .

It is a cyclic number.

It is not a de Polignac number, because 121004243057 - 2¹² = 121004238961 is a prime.

It is not a weakly prime, because it can be changed into another prime (121004243257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60502121528 + 60502121529.

It is an arithmetic number, because the mean of its divisors is an integer number (60502121529).

Almost surely, 2^121004243057 is an apocalyptic number.

It is an amenable number.

121004243057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121004243057 is an equidigital number, since it uses as much as digits as its factorization.

121004243057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

Adding to 121004243057 its reverse (750342400121), we get a palindrome (871346643178).

The spelling of 121004243057 in words is "one hundred twenty-one billion, four million, two hundred forty-three thousand, fifty-seven".