121225055671 has 2 divisors, whose sum is σ = 121225055672. Its totient is φ = 121225055670.

The previous prime is 121225055669. The next prime is 121225055711. The reversal of 121225055671 is 176550522121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121225055671 - 2¹ = 121225055669 is a prime.

Together with 121225055669, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121225055671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121225058671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60612527835 + 60612527836.

It is an arithmetic number, because the mean of its divisors is an integer number (60612527836).

Almost surely, 2^121225055671 is an apocalyptic number.

121225055671 is a deficient number, since it is larger than the sum of its proper divisors (1).

121225055671 is an equidigital number, since it uses as much as digits as its factorization.

121225055671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 37.

Adding to 121225055671 its reverse (176550522121), we get a palindrome (297775577792).

The spelling of 121225055671 in words is "one hundred twenty-one billion, two hundred twenty-five million, fifty-five thousand, six hundred seventy-one".