561100222 has 8 divisors (see below), whose sum is σ = 843305400. Its totient is φ = 279998424.

The previous prime is 561100219. The next prime is 561100223. The reversal of 561100222 is 222001165.

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

It is a self number, because there is not a number n which added to its sum of digits gives 561100222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561100223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274572 + ... + 276607.

It is an arithmetic number, because the mean of its divisors is an integer number (105413175).

Almost surely, 2^561100222 is an apocalyptic number.

561100222 is a deficient number, since it is larger than the sum of its proper divisors (282205178).

561100222 is a wasteful number, since it uses less digits than its factorization.

561100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551690.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 561100222 is about 23687.5541582494. The cubic root of 561100222 is about 824.7965078768.

Adding to 561100222 its reverse (222001165), we get a palindrome (783101387).

The spelling of 561100222 in words is "five hundred sixty-one million, one hundred thousand, two hundred twenty-two".