2021021111112 has 256 divisors, whose sum is σ = 5312795443200. Its totient is φ = 640120320000.

The previous prime is 2021021111101. The next prime is 2021021111113. The reversal of 2021021111112 is 2111111201202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2021021111091 and 2021021111100.

It is not an unprimeable number, because it can be changed into a prime (2021021111113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3362763612 + ... + 3362764212.

It is an arithmetic number, because the mean of its divisors is an integer number (20753107200).

Almost surely, 2^{2021021111112} 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 2021021111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2656397721600).

2021021111112 is an abundant number, since it is smaller than the sum of its proper divisors (3291774332088).

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

2021021111112 is a wasteful number, since it uses less digits than its factorization.

2021021111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2021021111112 its reverse (2111111201202), we get a palindrome (4132132312314).

The spelling of 2021021111112 in words is "two trillion, twenty-one billion, twenty-one million, one hundred eleven thousand, one hundred twelve".