122547107561 has 4 divisors (see below), whose sum is σ = 122626530432. Its totient is φ = 122467684692.

The previous prime is 122547107491. The next prime is 122547107591. The reversal of 122547107561 is 165701745221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122547107561 - 2¹⁰ = 122547106537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122547107591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39709121 + ... + 39712206.

It is an arithmetic number, because the mean of its divisors is an integer number (30656632608).

Almost surely, 2^122547107561 is an apocalyptic number.

It is an amenable number.

122547107561 is a deficient number, since it is larger than the sum of its proper divisors (79422871).

122547107561 is an equidigital number, since it uses as much as digits as its factorization.

122547107561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79422870.

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 122547107561 in words is "one hundred twenty-two billion, five hundred forty-seven million, one hundred seven thousand, five hundred sixty-one".