1020021222222 has 192 divisors, whose sum is σ = 2444055194880. Its totient is φ = 315233856000.

The previous prime is 1020021222173. The next prime is 1020021222257. The reversal of 1020021222222 is 2222221200201.

1020021222222 is a `hidden beast` number, since 1 + 0 + 200 + 21 + 222 + 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 = 1020021222195 and 1020021222204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 332577933 + ... + 332580999.

It is an arithmetic number, because the mean of its divisors is an integer number (12729454140).

Almost surely, 2^{1020021222222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020021222222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222027597440).

1020021222222 is an abundant number, since it is smaller than the sum of its proper divisors (1424033972658).

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

1020021222222 is a wasteful number, since it uses less digits than its factorization.

1020021222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424 (or 3401 counting only the distinct ones).

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

Adding to 1020021222222 its reverse (2222221200201), we get a palindrome (3242242422423).

The spelling of 1020021222222 in words is "one trillion, twenty billion, twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".