2021213084 has 48 divisors (see below), whose sum is σ = 4101377280. Its totient is φ = 861891840.

The previous prime is 2021213083. The next prime is 2021213093. The reversal of 2021213084 is 4803121202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021213081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74372 + ... + 97844.

It is an arithmetic number, because the mean of its divisors is an integer number (85445360).

Almost surely, 2^2021213084 is an apocalyptic number.

It is an amenable number.

2021213084 is an abundant number, since it is smaller than the sum of its proper divisors (2080164196).

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

2021213084 is a wasteful number, since it uses less digits than its factorization.

2021213084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23610 (or 23608 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2021213084 is about 44957.9034653530. The cubic root of 2021213084 is about 1264.3598617191.

Adding to 2021213084 its reverse (4803121202), we get a palindrome (6824334286).

The spelling of 2021213084 in words is "two billion, twenty-one million, two hundred thirteen thousand, eighty-four".