2021312322 has 24 divisors (see below), whose sum is σ = 4386844800. Its totient is φ = 672642360.

The previous prime is 2021312311. The next prime is 2021312323. The reversal of 2021312322 is 2232131202.

2021312322 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 2021312295 and 2021312304.

It is not an unprimeable number, because it can be changed into a prime (2021312323) 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, 82954 + ... + 104517.

It is an arithmetic number, because the mean of its divisors is an integer number (182785200).

Almost surely, 2^2021312322 is an apocalyptic number.

2021312322 is an abundant number, since it is smaller than the sum of its proper divisors (2365532478).

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

2021312322 is a wasteful number, since it uses less digits than its factorization.

2021312322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188078 (or 188075 counting only the distinct ones).

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

The square root of 2021312322 is about 44959.0071287167. The cubic root of 2021312322 is about 1264.3805539941.

Adding to 2021312322 its reverse (2232131202), we get a palindrome (4253443524).

The spelling of 2021312322 in words is "two billion, twenty-one million, three hundred twelve thousand, three hundred twenty-two".