2221111122122 has 8 divisors (see below), whose sum is σ = 3362232432900. Its totient is φ = 1100366977824.

The previous prime is 2221111122121. The next prime is 2221111122143. The reversal of 2221111122122 is 2212211111222.

It can be written as a sum of positive squares in 2 ways, for example, as 2213165004241 + 7946117881 = 1487671^2 + 89141^2 .

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 junction number, because it is equal to n+sod(n) for n = 2221111122094 and 2221111122103.

It is not an unprimeable number, because it can be changed into a prime (2221111122121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5094291347 + ... + 5094291782.

Almost surely, 2^{2221111122122} is an apocalyptic number.

2221111122122 is a deficient number, since it is larger than the sum of its proper divisors (1141121310778).

2221111122122 is a wasteful number, since it uses less digits than its factorization.

2221111122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10188583240.

The product of its digits is 128, while the sum is 20.

Adding to 2221111122122 its reverse (2212211111222), we get a palindrome (4433322233344).

The spelling of 2221111122122 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".