2021311012 has 12 divisors (see below), whose sum is σ = 4042622080. Its totient is φ = 866276136.

The previous prime is 2021310989. The next prime is 2021311013. The reversal of 2021311012 is 2101131202.

2021311012 is an admirable number.

It is a super-3 number, since 3×2021311012³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021310983 and 2021311001.

It is not an unprimeable number, because it can be changed into a prime (2021311013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36094812 + ... + 36094867.

Almost surely, 2^2021311012 is an apocalyptic number.

It is an amenable number.

2021311012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2021311012 is a wasteful number, since it uses less digits than its factorization.

2021311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72189690 (or 72189688 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2021311012 is about 44958.9925598873. The cubic root of 2021311012 is about 1264.3802808483.

Adding to 2021311012 its reverse (2101131202), we get a palindrome (4122442214).

The spelling of 2021311012 in words is "two billion, twenty-one million, three hundred eleven thousand, twelve".