121302102121 has 2 divisors, whose sum is σ = 121302102122. Its totient is φ = 121302102120.

The previous prime is 121302102091. The next prime is 121302102133. The reversal of 121302102121 is 121201203121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101640453721 + 19661648400 = 318811^2 + 140220^2 .

It is a cyclic number.

It is not a de Polignac number, because 121302102121 - 2²⁷ = 121167884393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121302102095 and 121302102104.

It is not a weakly prime, because it can be changed into another prime (121302102151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60651051060 + 60651051061.

It is an arithmetic number, because the mean of its divisors is an integer number (60651051061).

Almost surely, 2^121302102121 is an apocalyptic number.

It is an amenable number.

121302102121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121302102121 is an equidigital number, since it uses as much as digits as its factorization.

121302102121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121302102121 its reverse (121201203121), we get a palindrome (242503305242).

The spelling of 121302102121 in words is "one hundred twenty-one billion, three hundred two million, one hundred two thousand, one hundred twenty-one".