122966643556 has 9 divisors (see below), whose sum is σ = 215192853561. Its totient is φ = 61482971112.

The previous prime is 122966643539. The next prime is 122966643557. The reversal of 122966643556 is 655346669221.

The square root of 122966643556 is 350666.

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

122966643556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 118949112100 + 4017531456 = 344890^2 + 63384^2 .

It is a super-3 number, since 3×122966643556³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122966643497 and 122966643506.

It is not an unprimeable number, because it can be changed into a prime (122966643557) 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, 613666 + ... + 788998.

Almost surely, 2^122966643556 is an apocalyptic number.

122966643556 is the 350666-th square number.

It is an amenable number.

122966643556 is a deficient number, since it is larger than the sum of its proper divisors (92226210005).

122966643556 is an frugal number, since it uses more digits than its factorization.

122966643556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350670 (or 175335 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 55.

The spelling of 122966643556 in words is "one hundred twenty-two billion, nine hundred sixty-six million, six hundred forty-three thousand, five hundred fifty-six".