2021220221112 has 48 divisors (see below), whose sum is σ = 5474245645440. Its totient is φ = 673726837248.

The previous prime is 2021220221071. The next prime is 2021220221123. The reversal of 2021220221112 is 2111220221202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3837673 + ... + 4332455.

It is an arithmetic number, because the mean of its divisors is an integer number (114046784280).

Almost surely, 2^{2021220221112} is an apocalyptic number.

It is an amenable number.

2021220221112 is an abundant number, since it is smaller than the sum of its proper divisors (3453025424328).

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

2021220221112 is a wasteful number, since it uses less digits than its factorization.

2021220221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551532 (or 551525 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2021220221112 its reverse (2111220221202), we get a palindrome (4132440442314).

The spelling of 2021220221112 in words is "two trillion, twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twelve".