218220022 has 8 divisors (see below), whose sum is σ = 327546000. Its totient is φ = 109038024.

The previous prime is 218220019. The next prime is 218220047. The reversal of 218220022 is 220022812.

218220022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32122 + ... + 38317.

It is an arithmetic number, because the mean of its divisors is an integer number (40943250).

Almost surely, 2^218220022 is an apocalyptic number.

218220022 is a deficient number, since it is larger than the sum of its proper divisors (109325978).

218220022 is a wasteful number, since it uses less digits than its factorization.

218220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71990.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 218220022 is about 14772.2720662734. The cubic root of 218220022 is about 602.0485735430.

Adding to 218220022 its reverse (220022812), we get a palindrome (438242834).

The spelling of 218220022 in words is "two hundred eighteen million, two hundred twenty thousand, twenty-two".