121422565225547 has 2 divisors, whose sum is σ = 121422565225548. Its totient is φ = 121422565225546.

The previous prime is 121422565225541. The next prime is 121422565225727. The reversal of 121422565225547 is 745522565224121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121422565225547 - 2¹⁰ = 121422565224523 is a prime.

It is not a weakly prime, because it can be changed into another prime (121422565225541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60711282612773 + 60711282612774.

It is an arithmetic number, because the mean of its divisors is an integer number (60711282612774).

Almost surely, 2^{121422565225547} is an apocalyptic number.

121422565225547 is a deficient number, since it is larger than the sum of its proper divisors (1).

121422565225547 is an equidigital number, since it uses as much as digits as its factorization.

121422565225547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440000, while the sum is 53.

The spelling of 121422565225547 in words is "one hundred twenty-one trillion, four hundred twenty-two billion, five hundred sixty-five million, two hundred twenty-five thousand, five hundred forty-seven".