221244122 has 8 divisors (see below), whose sum is σ = 362035872. Its totient is φ = 100565500.

The previous prime is 221244097. The next prime is 221244173. The reversal of 221244122 is 221442122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221244094 and 221244103.

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, 5028254 + ... + 5028297.

It is an arithmetic number, because the mean of its divisors is an integer number (45254484).

Almost surely, 2^221244122 is an apocalyptic number.

221244122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221244122 is a deficient number, since it is larger than the sum of its proper divisors (140791750).

221244122 is a wasteful number, since it uses less digits than its factorization.

221244122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056564.

The product of its digits is 512, while the sum is 20.

The square root of 221244122 is about 14874.2771925227. The cubic root of 221244122 is about 604.8168942498.

Adding to 221244122 its reverse (221442122), we get a palindrome (442686244).

The spelling of 221244122 in words is "two hundred twenty-one million, two hundred forty-four thousand, one hundred twenty-two".