1022021112222 has 256 divisors, whose sum is σ = 2597872435200. Its totient is φ = 294983700480.

The previous prime is 1022021112197. The next prime is 1022021112227. The reversal of 1022021112222 is 2222111202201.

It is a happy number.

1022021112222 is a `hidden beast` number, since 1 + 0 + 220 + 211 + 12 + 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 = 1022021112195 and 1022021112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022021112227) 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 in 127 ways as a sum of consecutive naturals, for example, 639962328 + ... + 639963924.

It is an arithmetic number, because the mean of its divisors is an integer number (10147939200).

Almost surely, 2^{1022021112222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022021112222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298936217600).

1022021112222 is an abundant number, since it is smaller than the sum of its proper divisors (1575851322978).

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

1022021112222 is a wasteful number, since it uses less digits than its factorization.

1022021112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128 (or 2122 counting only the distinct ones).

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

Adding to 1022021112222 its reverse (2222111202201), we get a palindrome (3244132314423).

The spelling of 1022021112222 in words is "one trillion, twenty-two billion, twenty-one million, one hundred twelve thousand, two hundred twenty-two".