121211202112207 has 2 divisors, whose sum is σ = 121211202112208. Its totient is φ = 121211202112206.

The previous prime is 121211202112201. The next prime is 121211202112261. The reversal of 121211202112207 is 702211202112121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121211202112207 - 2³ = 121211202112199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211202112201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605601056103 + 60605601056104.

It is an arithmetic number, because the mean of its divisors is an integer number (60605601056104).

Almost surely, 2^{121211202112207} is an apocalyptic number.

121211202112207 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211202112207 is an equidigital number, since it uses as much as digits as its factorization.

121211202112207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 121211202112207 its reverse (702211202112121), we get a palindrome (823422404224328).

The spelling of 121211202112207 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred two million, one hundred twelve thousand, two hundred seven".