217257223271126 has 16 divisors (see below), whose sum is σ = 325952074858896. Its totient is φ = 108606533740896.

The previous prime is 217257223271107. The next prime is 217257223271131. The reversal of 217257223271126 is 621172322752712.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 211813925 + ... + 212837151.

It is an arithmetic number, because the mean of its divisors is an integer number (20372004678681).

Almost surely, 2^{217257223271126} is an apocalyptic number.

217257223271126 is a deficient number, since it is larger than the sum of its proper divisors (108694851587770).

217257223271126 is a wasteful number, since it uses less digits than its factorization.

217257223271126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044703.

The product of its digits is 1975680, while the sum is 50.

The spelling of 217257223271126 in words is "two hundred seventeen trillion, two hundred fifty-seven billion, two hundred twenty-three million, two hundred seventy-one thousand, one hundred twenty-six".