121609216207 has 2 divisors, whose sum is σ = 121609216208. Its totient is φ = 121609216206.

The previous prime is 121609216199. The next prime is 121609216213. The reversal of 121609216207 is 702612906121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121609216207 - 2³ = 121609216199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121609216277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60804608103 + 60804608104.

It is an arithmetic number, because the mean of its divisors is an integer number (60804608104).

Almost surely, 2^121609216207 is an apocalyptic number.

121609216207 is a deficient number, since it is larger than the sum of its proper divisors (1).

121609216207 is an equidigital number, since it uses as much as digits as its factorization.

121609216207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 121609216207 in words is "one hundred twenty-one billion, six hundred nine million, two hundred sixteen thousand, two hundred seven".