221122221050 has 12 divisors (see below), whose sum is σ = 411287331246. Its totient is φ = 88448888400.

The previous prime is 221122221049. The next prime is 221122221071. The reversal of 221122221050 is 50122221122.

It can be written as a sum of positive squares in 3 ways, for example, as 109940654329 + 111181566721 = 331573^2 + 333439^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2211222161 + ... + 2211222260.

Almost surely, 2^221122221050 is an apocalyptic number.

221122221050 is a deficient number, since it is larger than the sum of its proper divisors (190165110196).

221122221050 is a wasteful number, since it uses less digits than its factorization.

221122221050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422444433 (or 4422444428 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 221122221050 its reverse (50122221122), we get a palindrome (271244442172).

The spelling of 221122221050 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, fifty".