121021312101203 has 2 divisors, whose sum is σ = 121021312101204. Its totient is φ = 121021312101202.

The previous prime is 121021312101143. The next prime is 121021312101251. The reversal of 121021312101203 is 302101213120121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121021312101203 - 2¹⁸ = 121021311839059 is a prime.

It is not a weakly prime, because it can be changed into another prime (121021312151203) 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, 60510656050601 + 60510656050602.

It is an arithmetic number, because the mean of its divisors is an integer number (60510656050602).

Almost surely, 2^{121021312101203} is an apocalyptic number.

121021312101203 is a deficient number, since it is larger than the sum of its proper divisors (1).

121021312101203 is an equidigital number, since it uses as much as digits as its factorization.

121021312101203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121021312101203 its reverse (302101213120121), we get a palindrome (423122525221324).

The spelling of 121021312101203 in words is "one hundred twenty-one trillion, twenty-one billion, three hundred twelve million, one hundred one thousand, two hundred three".