220117723172 has 12 divisors (see below), whose sum is σ = 385210166796. Its totient is φ = 110057675520.

The previous prime is 220117723151. The next prime is 220117723183. The reversal of 220117723172 is 271327711022.

220117723172 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 2 ways, for example, as 202334433856 + 17783289316 = 449816^2 + 133354^2 .

It is a super-3 number, since 3×220117723172³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221672 + ... + 699552.

It is an arithmetic number, because the mean of its divisors is an integer number (32100847233).

Almost surely, 2^220117723172 is an apocalyptic number.

It is an amenable number.

220117723172 is a deficient number, since it is larger than the sum of its proper divisors (165092443624).

220117723172 is a wasteful number, since it uses less digits than its factorization.

220117723172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593038 (or 593036 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 35.

The spelling of 220117723172 in words is "two hundred twenty billion, one hundred seventeen million, seven hundred twenty-three thousand, one hundred seventy-two".