122665792060681 has 3 divisors (see below), whose sum is σ = 122665803136141. Its totient is φ = 122665780985222.

The previous prime is 122665792060673. The next prime is 122665792060697. The reversal of 122665792060681 is 186060297566221.

The square root of 122665792060681 is 11075459.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 122665792060681 - 2³ = 122665792060673 is a prime.

It is a super-2 number, since 2×122665792060681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122665792060631) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5537730 + ... + 16613188.

Almost surely, 2^{122665792060681} is an apocalyptic number.

122665792060681 is the 11075459-th square number.

122665792060681 is the 5537730-th centered octagonal number.

It is an amenable number.

122665792060681 is a deficient number, since it is larger than the sum of its proper divisors (11075460).

122665792060681 is an frugal number, since it uses more digits than its factorization.

122665792060681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22150918 (or 11075459 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 122665792060681 in words is "one hundred twenty-two trillion, six hundred sixty-five billion, seven hundred ninety-two million, sixty thousand, six hundred eighty-one".