122886495781 has 20 divisors (see below), whose sum is σ = 144488218112. Its totient is φ = 104501642616.

The previous prime is 122886495773. The next prime is 122886495793. The reversal of 122886495781 is 187594688221.

It is a happy number.

It is not a de Polignac number, because 122886495781 - 2³ = 122886495773 is a prime.

It is a super-2 number, since 2×122886495781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122886495181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 103426 + ... + 506428.

Almost surely, 2^122886495781 is an apocalyptic number.

It is an amenable number.

122886495781 is a deficient number, since it is larger than the sum of its proper divisors (21601722331).

122886495781 is an frugal number, since it uses more digits than its factorization.

122886495781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403158 (or 403137 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 61.

The spelling of 122886495781 in words is "one hundred twenty-two billion, eight hundred eighty-six million, four hundred ninety-five thousand, seven hundred eighty-one".