2021123013112 has 64 divisors (see below), whose sum is σ = 4476370544640. Its totient is φ = 837188092800.

The previous prime is 2021123013097. The next prime is 2021123013121. The reversal of 2021123013112 is 2113103211202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021123013112.

It is a congruent number.

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, 626562 + ... + 2105902.

It is an arithmetic number, because the mean of its divisors is an integer number (69943289760).

Almost surely, 2^{2021123013112} 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 2021123013112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2238185272320).

2021123013112 is an abundant number, since it is smaller than the sum of its proper divisors (2455247531528).

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

2021123013112 is a wasteful number, since it uses less digits than its factorization.

2021123013112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480172 (or 1480168 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2021123013112 its reverse (2113103211202), we get a palindrome (4134226224314).

The spelling of 2021123013112 in words is "two trillion, twenty-one billion, one hundred twenty-three million, thirteen thousand, one hundred twelve".