2021112012 has 12 divisors (see below), whose sum is σ = 4715928056. Its totient is φ = 673704000.

The previous prime is 2021111999. The next prime is 2021112047. The reversal of 2021112012 is 2102111202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 168426001 = 2021112012 / (2 + 0 + 2 + 1 + 1 + 1 + 2 + 0 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84212989 + ... + 84213012.

Almost surely, 2^2021112012 is an apocalyptic number.

It is an amenable number.

2021112012 is an abundant number, since it is smaller than the sum of its proper divisors (2694816044).

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

2021112012 is a wasteful number, since it uses less digits than its factorization.

2021112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168426008 (or 168426006 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2021112012 is about 44956.7793775310. The cubic root of 2021112012 is about 1264.3387863377.

Adding to 2021112012 its reverse (2102111202), we get a palindrome (4123223214).

It can be divided in two parts, 20211 and 12012, that added together give a palindrome (32223).

The spelling of 2021112012 in words is "two billion, twenty-one million, one hundred twelve thousand, twelve".