1000021222112 has 96 divisors (see below), whose sum is σ = 2171739548160. Its totient is φ = 449495493120.

The previous prime is 1000021222111. The next prime is 1000021222117. The reversal of 1000021222112 is 2112221200001.

1000021222112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000021222111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25686053 + ... + 25724955.

It is an arithmetic number, because the mean of its divisors is an integer number (22622286960).

Almost surely, 2^{1000021222112} 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 1000021222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1085869774080).

1000021222112 is an abundant number, since it is smaller than the sum of its proper divisors (1171718326048).

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

1000021222112 is a wasteful number, since it uses less digits than its factorization.

1000021222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39736 (or 39728 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1000021222112 its reverse (2112221200001), we get a palindrome (3112242422113).

The spelling of 1000021222112 in words is "one trillion, twenty-one million, two hundred twenty-two thousand, one hundred twelve".