221120222122 has 8 divisors (see below), whose sum is σ = 331682338116. Its totient is φ = 110559442752.

The previous prime is 221120222117. The next prime is 221120222153. The reversal of 221120222122 is 221222021122.

It can be written as a sum of positive squares in 2 ways, for example, as 191625938001 + 29494284121 = 437751^2 + 171739^2 .

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 221120222122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418338 + ... + 785650.

Almost surely, 2^221120222122 is an apocalyptic number.

221120222122 is a deficient number, since it is larger than the sum of its proper divisors (110562115994).

221120222122 is a wasteful number, since it uses less digits than its factorization.

221120222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668312.

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

Adding to 221120222122 its reverse (221222021122), we get a palindrome (442342243244).

The spelling of 221120222122 in words is "two hundred twenty-one billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twenty-two".