222116488166329 has 3 divisors (see below), whose sum is σ = 222116503069903. Its totient is φ = 222116473262756.

The previous prime is 222116488166267. The next prime is 222116488166383. The reversal of 222116488166329 is 923661884611222.

The square root of 222116488166329 is 14903573.

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 can be written as a sum of positive squares in only one way, i.e., 202646755514025 + 19469732652304 = 14235405^2 + 4412452^2 .

It is not a de Polignac number, because 222116488166329 - 2¹³ = 222116488158137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222116488166389) 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, 7451787 + ... + 22355359.

Almost surely, 2^{222116488166329} is an apocalyptic number.

222116488166329 is the 14903573-rd square number.

222116488166329 is the 7451787-th centered octagonal number.

It is an amenable number.

222116488166329 is a deficient number, since it is larger than the sum of its proper divisors (14903574).

222116488166329 is an frugal number, since it uses more digits than its factorization.

222116488166329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29807146 (or 14903573 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 61.

The spelling of 222116488166329 in words is "two hundred twenty-two trillion, one hundred sixteen billion, four hundred eighty-eight million, one hundred sixty-six thousand, three hundred twenty-nine".