121221021202003 has 2 divisors, whose sum is σ = 121221021202004. Its totient is φ = 121221021202002.

The previous prime is 121221021201991. The next prime is 121221021202007. The reversal of 121221021202003 is 300202120122121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121221021202003 - 2⁵ = 121221021201971 is a prime.

It is not a weakly prime, because it can be changed into another prime (121221021202007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610510601001 + 60610510601002.

It is an arithmetic number, because the mean of its divisors is an integer number (60610510601002).

Almost surely, 2^{121221021202003} is an apocalyptic number.

121221021202003 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221021202003 is an equidigital number, since it uses as much as digits as its factorization.

121221021202003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121221021202003 its reverse (300202120122121), we get a palindrome (421423141324124).

The spelling of 121221021202003 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, two hundred two thousand, three".