122917555216 has 15 divisors (see below), whose sum is σ = 238155480381. Its totient is φ = 61458076416.

The previous prime is 122917555181. The next prime is 122917555217. The reversal of 122917555216 is 612555719221.

The square root of 122917555216 is 350596.

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

It can be written as a sum of positive squares in only one way, i.e., 44607129616 + 78310425600 = 211204^2 + 279840^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122917555217) 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, 1358560 + ... + 1446208.

Almost surely, 2^122917555216 is an apocalyptic number.

122917555216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

122917555216 is the 350596-th square number.

It is an amenable number.

122917555216 is a deficient number, since it is larger than the sum of its proper divisors (115237925165).

122917555216 is an frugal number, since it uses more digits than its factorization.

122917555216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175306 (or 87651 counting only the distinct ones).

The product of its digits is 378000, while the sum is 46.

The spelling of 122917555216 in words is "one hundred twenty-two billion, nine hundred seventeen million, five hundred fifty-five thousand, two hundred sixteen".