2021112444 has 48 divisors (see below), whose sum is σ = 5125329440. Its totient is φ = 616170240.

The previous prime is 2021112421. The next prime is 2021112493. The reversal of 2021112444 is 4442111202.

It is a super-2 number, since 2×2021112444² = 8169791022583306272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021112444.

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, 42427 + ... + 76434.

Almost surely, 2^2021112444 is an apocalyptic number.

It is an amenable number.

2021112444 is an abundant number, since it is smaller than the sum of its proper divisors (3104216996).

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

2021112444 is a wasteful number, since it uses less digits than its factorization.

2021112444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118990 (or 118988 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2021112444 is about 44956.7841821454. The cubic root of 2021112444 is about 1264.3388764192.

Adding to 2021112444 its reverse (4442111202), we get a palindrome (6463223646).

The spelling of 2021112444 in words is "two billion, twenty-one million, one hundred twelve thousand, four hundred forty-four".