1021020222222 has 256 divisors, whose sum is σ = 3047959756800. Its totient is φ = 244674794880.

The previous prime is 1021020222199. The next prime is 1021020222283. The reversal of 1021020222222 is 2222220201201.

1021020222222 is a `hidden beast` number, since 10 + 210 + 2 + 0 + 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 = 1021020222195 and 1021020222204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 146969353 + ... + 146976299.

It is an arithmetic number, because the mean of its divisors is an integer number (11906092800).

Almost surely, 2^{1021020222222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021020222222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1523979878400).

1021020222222 is an abundant number, since it is smaller than the sum of its proper divisors (2026939534578).

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

1021020222222 is a wasteful number, since it uses less digits than its factorization.

1021020222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9708 (or 9702 counting only the distinct ones).

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

Adding to 1021020222222 its reverse (2222220201201), we get a palindrome (3243240423423).

The spelling of 1021020222222 in words is "one trillion, twenty-one billion, twenty million, two hundred twenty-two thousand, two hundred twenty-two".