2021322312 has 48 divisors (see below), whose sum is σ = 5506092540. Its totient is φ = 669875328.

The previous prime is 2021322311. The next prime is 2021322313. The reversal of 2021322312 is 2132231202.

It is an interprime number because it is at equal distance from previous prime (2021322311) and next prime (2021322313).

It can be written as a sum of positive squares in 2 ways, for example, as 2020142916 + 1179396 = 44946^2 + 1086^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2021322311) 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 11 ways as a sum of consecutive naturals, for example, 68683 + ... + 93594.

Almost surely, 2^2021322312 is an apocalyptic number.

It is an amenable number.

2021322312 is an abundant number, since it is smaller than the sum of its proper divisors (3484770228).

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

2021322312 is a wasteful number, since it uses less digits than its factorization.

2021322312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162462 (or 162455 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2021322312 is about 44959.1182297874. The cubic root of 2021322312 is about 1264.3826369875.

Adding to 2021322312 its reverse (2132231202), we get a palindrome (4153553514).

The spelling of 2021322312 in words is "two billion, twenty-one million, three hundred twenty-two thousand, three hundred twelve".