217257223271130 has 48 divisors (see below), whose sum is σ = 645564320578944. Its totient is φ = 49658793890400.

The previous prime is 217257223271107. The next prime is 217257223271131. The reversal of 217257223271130 is 31172322752712.

217257223271130 is a `hidden beast` number, since 2 + 1 + 7 + 2 + 572 + 2 + 3 + 2 + 71 + 1 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (217257223271131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172426367046 + ... + 172426368305.

It is an arithmetic number, because the mean of its divisors is an integer number (13449256678728).

Almost surely, 2^{217257223271130} is an apocalyptic number.

217257223271130 is an abundant number, since it is smaller than the sum of its proper divisors (428307097307814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

217257223271130 is a wasteful number, since it uses less digits than its factorization.

217257223271130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344852735371 (or 344852735368 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The spelling of 217257223271130 in words is "two hundred seventeen trillion, two hundred fifty-seven billion, two hundred twenty-three million, two hundred seventy-one thousand, one hundred thirty".