2021204412 has 18 divisors (see below), whose sum is σ = 5109155688. Its totient is φ = 673734792.

The previous prime is 2021204389. The next prime is 2021204417. The reversal of 2021204412 is 2144021202.

2021204412 is a `hidden beast` number, since 202 + 1 + 20 + 441 + 2 = 666.

2021204412 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021204417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28072248 + ... + 28072319.

Almost surely, 2^2021204412 is an apocalyptic number.

It is an amenable number.

2021204412 is an abundant number, since it is smaller than the sum of its proper divisors (3087951276).

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

2021204412 is a wasteful number, since it uses less digits than its factorization.

2021204412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56144577 (or 56144572 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2021204412 is about 44957.8070194710. The cubic root of 2021204412 is about 1264.3580534743.

Adding to 2021204412 its reverse (2144021202), we get a palindrome (4165225614).

The spelling of 2021204412 in words is "two billion, twenty-one million, two hundred four thousand, four hundred twelve".