121245253601 has 2 divisors, whose sum is σ = 121245253602. Its totient is φ = 121245253600.

The previous prime is 121245253583. The next prime is 121245253607. The reversal of 121245253601 is 106352542121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98910250000 + 22335003601 = 314500^2 + 149449^2 .

It is a cyclic number.

It is not a de Polignac number, because 121245253601 - 2²² = 121241059297 is a prime.

It is not a weakly prime, because it can be changed into another prime (121245253607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60622626800 + 60622626801.

It is an arithmetic number, because the mean of its divisors is an integer number (60622626801).

Almost surely, 2^121245253601 is an apocalyptic number.

It is an amenable number.

121245253601 is a deficient number, since it is larger than the sum of its proper divisors (1).

121245253601 is an equidigital number, since it uses as much as digits as its factorization.

121245253601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 121245253601 its reverse (106352542121), we get a palindrome (227597795722).

The spelling of 121245253601 in words is "one hundred twenty-one billion, two hundred forty-five million, two hundred fifty-three thousand, six hundred one".