218088202209 has 16 divisors (see below), whose sum is σ = 307899708480. Its totient is φ = 136834997760.

The previous prime is 218088202127. The next prime is 218088202229. The reversal of 218088202209 is 902202880812.

It is not a de Polignac number, because 218088202209 - 2⁸ = 218088201953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (218088202229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2029389 + ... + 2134149.

It is an arithmetic number, because the mean of its divisors is an integer number (19243731780).

Almost surely, 2^218088202209 is an apocalyptic number.

It is an amenable number.

218088202209 is a deficient number, since it is larger than the sum of its proper divisors (89811506271).

218088202209 is a wasteful number, since it uses less digits than its factorization.

218088202209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145600.

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 218088202209 in words is "two hundred eighteen billion, eighty-eight million, two hundred two thousand, two hundred nine".