217122081642302 has 16 divisors (see below), whose sum is σ = 325749457958400. Its totient is φ = 108538930989528.

The previous prime is 217122081642227. The next prime is 217122081642329. The reversal of 217122081642302 is 203246180221712.

It is a self number, because there is not a number n which added to its sum of digits gives 217122081642302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221629433 + ... + 222606939.

It is an arithmetic number, because the mean of its divisors is an integer number (20359341122400).

Almost surely, 2^{217122081642302} is an apocalyptic number.

217122081642302 is a deficient number, since it is larger than the sum of its proper divisors (108627376316098).

217122081642302 is a wasteful number, since it uses less digits than its factorization.

217122081642302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000015.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 217122081642302 in words is "two hundred seventeen trillion, one hundred twenty-two billion, eighty-one million, six hundred forty-two thousand, three hundred two".