2021312260 has 36 divisors (see below), whose sum is σ = 4665728844. Its totient is φ = 735021760.

The previous prime is 2021312233. The next prime is 2021312261. The reversal of 2021312260 is 622131202.

It can be written as a sum of positive squares in 2 ways, for example, as 576096004 + 1445216256 = 24002^2 + 38016^2 .

It is not an unprimeable number, because it can be changed into a prime (2021312261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415207 + ... + 420046.

It is an arithmetic number, because the mean of its divisors is an integer number (129603579).

Almost surely, 2^2021312260 is an apocalyptic number.

2021312260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021312260 is an abundant number, since it is smaller than the sum of its proper divisors (2644416584).

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

2021312260 is a wasteful number, since it uses less digits than its factorization.

2021312260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835284 (or 835271 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2021312260 is about 44959.0064391997. The cubic root of 2021312260 is about 1264.3805410666.

Adding to 2021312260 its reverse (622131202), we get a palindrome (2643443462).

The spelling of 2021312260 in words is "two billion, twenty-one million, three hundred twelve thousand, two hundred sixty".