222222121012122 has 192 divisors, whose sum is σ = 569714101862400. Its totient is φ = 57136234512000.

The previous prime is 222222121012103. The next prime is 222222121012153. The reversal of 222222121012122 is 221210121222222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 222222121012092 and 222222121012101.

It is an unprimeable number.

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 in 95 ways as a sum of consecutive naturals, for example, 1567445683 + ... + 1567587449.

It is an arithmetic number, because the mean of its divisors is an integer number (2967260947200).

Almost surely, 2^{222222121012122} is an apocalyptic number.

222222121012122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 222222121012122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284857050931200).

222222121012122 is an abundant number, since it is smaller than the sum of its proper divisors (347491980850278).

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

222222121012122 is a wasteful number, since it uses less digits than its factorization.

222222121012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146697 (or 146690 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222222121012122 its reverse (221210121222222), we get a palindrome (443432242234344).

The spelling of 222222121012122 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, twelve thousand, one hundred twenty-two".