2021222112528 has 160 divisors (see below), whose sum is σ = 5601226498560. Its totient is φ = 625790730240.

The previous prime is 2021222112523. The next prime is 2021222112529. The reversal of 2021222112528 is 8252112221202.

It is a junction number, because it is equal to n+sod(n) for n = 2021222112495 and 2021222112504.

It is not an unprimeable number, because it can be changed into a prime (2021222112521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168696298 + ... + 168708278.

It is an arithmetic number, because the mean of its divisors is an integer number (35007665616).

Almost surely, 2^{2021222112528} 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 2021222112528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2800613249280).

2021222112528 is an abundant number, since it is smaller than the sum of its proper divisors (3580004386032).

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

2021222112528 is a wasteful number, since it uses less digits than its factorization.

2021222112528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14705 (or 14699 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The spelling of 2021222112528 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, five hundred twenty-eight".