121201210213 has 2 divisors, whose sum is σ = 121201210214. Its totient is φ = 121201210212.

The previous prime is 121201210199. The next prime is 121201210219. The reversal of 121201210213 is 312012102121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113988614884 + 7212595329 = 337622^2 + 84927^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201210213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201210219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600605106 + 60600605107.

It is an arithmetic number, because the mean of its divisors is an integer number (60600605107).

Almost surely, 2^121201210213 is an apocalyptic number.

It is an amenable number.

121201210213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201210213 is an equidigital number, since it uses as much as digits as its factorization.

121201210213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121201210213 its reverse (312012102121), we get a palindrome (433213312334).

The spelling of 121201210213 in words is "one hundred twenty-one billion, two hundred one million, two hundred ten thousand, two hundred thirteen".