121220210021063 has 2 divisors, whose sum is σ = 121220210021064. Its totient is φ = 121220210021062.

The previous prime is 121220210021017. The next prime is 121220210021081. The reversal of 121220210021063 is 360120012022121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121220210021063 - 2¹⁸ = 121220209758919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220210021363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610105010531 + 60610105010532.

It is an arithmetic number, because the mean of its divisors is an integer number (60610105010532).

Almost surely, 2^{121220210021063} is an apocalyptic number.

121220210021063 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220210021063 is an equidigital number, since it uses as much as digits as its factorization.

121220210021063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 121220210021063 its reverse (360120012022121), we get a palindrome (481340222043184).

The spelling of 121220210021063 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred ten million, twenty-one thousand, sixty-three".