2021222211112 has 64 divisors (see below), whose sum is σ = 4177438272000. Its totient is φ = 910989004800.

The previous prime is 2021222211089. The next prime is 2021222211181. The reversal of 2021222211112 is 2111122221202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021222211112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1734237 + ... + 2655187.

It is an arithmetic number, because the mean of its divisors is an integer number (65272473000).

Almost surely, 2^{2021222211112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021222211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2088719136000).

2021222211112 is an abundant number, since it is smaller than the sum of its proper divisors (2156216060888).

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

2021222211112 is a wasteful number, since it uses less digits than its factorization.

2021222211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921466 (or 921462 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2021222211112 its reverse (2111122221202), we get a palindrome (4132344432314).

The spelling of 2021222211112 in words is "two trillion, twenty-one billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twelve".