121102102120057 has 2 divisors, whose sum is σ = 121102102120058. Its totient is φ = 121102102120056.

The previous prime is 121102102120009. The next prime is 121102102120163. The reversal of 121102102120057 is 750021201201121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114232403457936 + 6869698662121 = 10687956^2 + 2621011^2 .

It is a cyclic number.

It is not a de Polignac number, because 121102102120057 - 2²³ = 121102093731449 is a prime.

It is not a weakly prime, because it can be changed into another prime (121102102121057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551051060028 + 60551051060029.

It is an arithmetic number, because the mean of its divisors is an integer number (60551051060029).

Almost surely, 2^{121102102120057} is an apocalyptic number.

It is an amenable number.

121102102120057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102102120057 is an equidigital number, since it uses as much as digits as its factorization.

121102102120057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 25.

Adding to 121102102120057 its reverse (750021201201121), we get a palindrome (871123303321178).

The spelling of 121102102120057 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred two million, one hundred twenty thousand, fifty-seven".