121211200223 has 2 divisors, whose sum is σ = 121211200224. Its totient is φ = 121211200222.

The previous prime is 121211200129. The next prime is 121211200237. The reversal of 121211200223 is 322002112121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121211200223 - 2¹⁴ = 121211183839 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211200423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605600111 + 60605600112.

It is an arithmetic number, because the mean of its divisors is an integer number (60605600112).

Almost surely, 2^121211200223 is an apocalyptic number.

121211200223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211200223 is an equidigital number, since it uses as much as digits as its factorization.

121211200223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121211200223 its reverse (322002112121), we get a palindrome (443213312344).

The spelling of 121211200223 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred thousand, two hundred twenty-three".