220111220122 has 4 divisors (see below), whose sum is σ = 330166830186. Its totient is φ = 110055610060.

The previous prime is 220111220071. The next prime is 220111220123. The reversal of 220111220122 is 221022111022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 218162792241 + 1948427881 = 467079^2 + 44141^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220111220096 and 220111220105.

It is not an unprimeable number, because it can be changed into a prime (220111220123) by changing a digit.

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 as a sum of consecutive naturals, namely, 55027805029 + ... + 55027805032.

Almost surely, 2^220111220122 is an apocalyptic number.

220111220122 is a deficient number, since it is larger than the sum of its proper divisors (110055610064).

220111220122 is a wasteful number, since it uses less digits than its factorization.

220111220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110055610063.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220111220122 its reverse (221022111022), we get a palindrome (441133331144).

The spelling of 220111220122 in words is "two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, one hundred twenty-two".