2021321012 has 24 divisors (see below), whose sum is σ = 3751952904. Its totient is φ = 949542912.

The previous prime is 2021321011. The next prime is 2021321021. The reversal of 2021321012 is 2101231202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1744231696 + 277089316 = 41764^2 + 16646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021321011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13478 + ... + 64994.

It is an arithmetic number, because the mean of its divisors is an integer number (156331371).

Almost surely, 2^2021321012 is an apocalyptic number.

It is an amenable number.

2021321012 is a deficient number, since it is larger than the sum of its proper divisors (1730631892).

2021321012 is a wasteful number, since it uses less digits than its factorization.

2021321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52115 (or 52113 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2021321012 is about 44959.1037722061. The cubic root of 2021321012 is about 1264.3823659277.

Adding to 2021321012 its reverse (2101231202), we get a palindrome (4122552214).

The spelling of 2021321012 in words is "two billion, twenty-one million, three hundred twenty-one thousand, twelve".