221111121122 has 8 divisors (see below), whose sum is σ = 343103463900. Its totient is φ = 106743299824.

The previous prime is 221111121103. The next prime is 221111121157. The reversal of 221111121122 is 221121111122.

221111121122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 220147701601 + 963419521 = 469199^2 + 31039^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 221111121122.

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, 1906130297 + ... + 1906130412.

Almost surely, 2^221111121122 is an apocalyptic number.

221111121122 is a deficient number, since it is larger than the sum of its proper divisors (121992342778).

221111121122 is a wasteful number, since it uses less digits than its factorization.

221111121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812260740.

The product of its digits is 32, while the sum is 17.

Adding to 221111121122 its reverse (221121111122), we get a palindrome (442232232244).

The spelling of 221111121122 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twenty-two".