2021220112000 has 128 divisors (see below), whose sum is σ = 5110434763200. Its totient is φ = 794784486400.

The previous prime is 2021220111997. The next prime is 2021220112057. The reversal of 2021220112000 is 2110221202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126562 + ... + 2014561.

Almost surely, 2^{2021220112000} is an apocalyptic number.

2021220112000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021220112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2555217381600).

2021220112000 is an abundant number, since it is smaller than the sum of its proper divisors (3089214651200).

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

2021220112000 is an equidigital number, since it uses as much as digits as its factorization.

2021220112000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141211 (or 2141189 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2021220112000 its reverse (2110221202), we get a palindrome (2023330333202).

The spelling of 2021220112000 in words is "two trillion, twenty-one billion, two hundred twenty million, one hundred twelve thousand".