221822222 has 8 divisors (see below), whose sum is σ = 352305936. Its totient is φ = 104386912.

The previous prime is 221822221. The next prime is 221822233. The reversal of 221822222 is 222228122.

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

221822222 is a modest number, since divided by 22222 gives 2218 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221822221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3262058 + ... + 3262125.

It is an arithmetic number, because the mean of its divisors is an integer number (44038242).

Almost surely, 2^221822222 is an apocalyptic number.

221822222 is a deficient number, since it is larger than the sum of its proper divisors (130483714).

221822222 is a wasteful number, since it uses less digits than its factorization.

221822222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6524202.

The product of its digits is 1024, while the sum is 23.

The square root of 221822222 is about 14893.6973918500. The cubic root of 221822222 is about 605.3432216839.

It can be divided in two parts, 2218222 and 22, that multiplied together give a palindrome (48800884).

The spelling of 221822222 in words is "two hundred twenty-one million, eight hundred twenty-two thousand, two hundred twenty-two".