121504252277 has 2 divisors, whose sum is σ = 121504252278. Its totient is φ = 121504252276.

The previous prime is 121504252273. The next prime is 121504252351. The reversal of 121504252277 is 772252405121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98524420996 + 22979831281 = 313886^2 + 151591^2 .

It is a cyclic number.

It is not a de Polignac number, because 121504252277 - 2² = 121504252273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121504252277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121504252273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60752126138 + 60752126139.

It is an arithmetic number, because the mean of its divisors is an integer number (60752126139).

Almost surely, 2^121504252277 is an apocalyptic number.

It is an amenable number.

121504252277 is a deficient number, since it is larger than the sum of its proper divisors (1).

121504252277 is an equidigital number, since it uses as much as digits as its factorization.

121504252277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78400, while the sum is 38.

Adding to 121504252277 its reverse (772252405121), we get a palindrome (893756657398).

The spelling of 121504252277 in words is "one hundred twenty-one billion, five hundred four million, two hundred fifty-two thousand, two hundred seventy-seven".