2211223122 has 24 divisors (see below), whose sum is σ = 4872188880. Its totient is φ = 724581240.

The previous prime is 2211223121. The next prime is 2211223127. The reversal of 2211223122 is 2213221122.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 = 2211223095 and 2211223104.

It is not an unprimeable number, because it can be changed into a prime (2211223121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1040004 + ... + 1042127.

It is an arithmetic number, because the mean of its divisors is an integer number (203007870).

Almost surely, 2^2211223122 is an apocalyptic number.

2211223122 is an abundant number, since it is smaller than the sum of its proper divisors (2660965758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211223122 is a wasteful number, since it uses less digits than its factorization.

2211223122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082198 (or 2082195 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 2211223122 is about 47023.6442866777. The cubic root of 2211223122 is about 1302.7993173513.

Adding to 2211223122 its reverse (2213221122), we get a palindrome (4424444244).

The spelling of 2211223122 in words is "two billion, two hundred eleven million, two hundred twenty-three thousand, one hundred twenty-two".