22212121122 has 24 divisors (see below), whose sum is σ = 48130086576. Its totient is φ = 7403452056.

The previous prime is 22212121121. The next prime is 22212121123. The reversal of 22212121122 is 22112121222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22212121121) and next prime (22212121123).

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 = 22212121095 and 22212121104.

It is not an unprimeable number, because it can be changed into a prime (22212121121) 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, 225273 + ... + 308499.

It is an arithmetic number, because the mean of its divisors is an integer number (2005420274).

Almost surely, 2^22212121122 is an apocalyptic number.

22212121122 is an abundant number, since it is smaller than the sum of its proper divisors (25917965454).

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

22212121122 is a wasteful number, since it uses less digits than its factorization.

22212121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98062 (or 98059 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

Adding to 22212121122 its reverse (22112121222), we get a palindrome (44324242344).

The spelling of 22212121122 in words is "twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twenty-two".