1021112022222 has 80 divisors (see below), whose sum is σ = 2322806264064. Its totient is φ = 335235240000.

The previous prime is 1021112022143. The next prime is 1021112022277. The reversal of 1021112022222 is 2222202111201.

It is a happy number.

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 = 1021112022195 and 1021112022204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2961772 + ... + 3288512.

Almost surely, 2^{1021112022222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021112022222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161403132032).

1021112022222 is an abundant number, since it is smaller than the sum of its proper divisors (1301694241842).

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

1021112022222 is a wasteful number, since it uses less digits than its factorization.

1021112022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327047 (or 327038 counting only the distinct ones).

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

Adding to 1021112022222 its reverse (2222202111201), we get a palindrome (3243314133423).

The spelling of 1021112022222 in words is "one trillion, twenty-one billion, one hundred twelve million, twenty-two thousand, two hundred twenty-two".