121321233210211 has 2 divisors, whose sum is σ = 121321233210212. Its totient is φ = 121321233210210.

The previous prime is 121321233210137. The next prime is 121321233210227. The reversal of 121321233210211 is 112012332123121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121321233210211 - 2⁷ = 121321233210083 is a prime.

It is not a weakly prime, because it can be changed into another prime (121321233210241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660616605105 + 60660616605106.

It is an arithmetic number, because the mean of its divisors is an integer number (60660616605106).

Almost surely, 2^{121321233210211} is an apocalyptic number.

121321233210211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121321233210211 is an equidigital number, since it uses as much as digits as its factorization.

121321233210211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 121321233210211 its reverse (112012332123121), we get a palindrome (233333565333332).

The spelling of 121321233210211 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, two hundred thirty-three million, two hundred ten thousand, two hundred eleven".