218822001 has 16 divisors (see below), whose sum is σ = 299436480. Its totient is φ = 142084800.

The previous prime is 218821987. The next prime is 218822027. The reversal of 218822001 is 100228812.

It is not a de Polignac number, because 218822001 - 2⁷ = 218821873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (218822041) 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, 17151 + ... + 27051.

It is an arithmetic number, because the mean of its divisors is an integer number (18714780).

Almost surely, 2^218822001 is an apocalyptic number.

It is an amenable number.

218822001 is a deficient number, since it is larger than the sum of its proper divisors (80614479).

218822001 is a wasteful number, since it uses less digits than its factorization.

218822001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10096.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 218822001 is about 14792.6333355492. The cubic root of 218822001 is about 602.6016664695.

The spelling of 218822001 in words is "two hundred eighteen million, eight hundred twenty-two thousand, one".