121213330057 has 2 divisors, whose sum is σ = 121213330058. Its totient is φ = 121213330056.

The previous prime is 121213330033. The next prime is 121213330067. The reversal of 121213330057 is 750033312121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82584965376 + 38628364681 = 287376^2 + 196541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121213330057 is a prime.

It is not a weakly prime, because it can be changed into another prime (121213330027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606665028 + 60606665029.

It is an arithmetic number, because the mean of its divisors is an integer number (60606665029).

Almost surely, 2^121213330057 is an apocalyptic number.

It is an amenable number.

121213330057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213330057 is an equidigital number, since it uses as much as digits as its factorization.

121213330057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 121213330057 its reverse (750033312121), we get a palindrome (871246642178).

The spelling of 121213330057 in words is "one hundred twenty-one billion, two hundred thirteen million, three hundred thirty thousand, fifty-seven".