1022221002222 has 192 divisors, whose sum is σ = 2617356478464. Its totient is φ = 282293683200.

The previous prime is 1022221002199. The next prime is 1022221002227. The reversal of 1022221002222 is 2222001222201.

1022221002222 is a `hidden beast` number, since 10 + 222 + 210 + 0 + 2 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1022221002195 and 1022221002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022221002227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 258984853 + ... + 258988799.

It is an arithmetic number, because the mean of its divisors is an integer number (13632064992).

Almost surely, 2^{1022221002222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022221002222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308678239232).

1022221002222 is an abundant number, since it is smaller than the sum of its proper divisors (1595135476242).

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

1022221002222 is a wasteful number, since it uses less digits than its factorization.

1022221002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543 (or 4540 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1022221002222 its reverse (2222001222201), we get a palindrome (3244222224423).

The spelling of 1022221002222 in words is "one trillion, twenty-two billion, two hundred twenty-one million, two thousand, two hundred twenty-two".