2102021112 has 16 divisors (see below), whose sum is σ = 5255052840. Its totient is φ = 700673696.

The previous prime is 2102021111. The next prime is 2102021147. The reversal of 2102021112 is 2111202012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102021111) 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, 43792083 + ... + 43792130.

Almost surely, 2^2102021112 is an apocalyptic number.

It is an amenable number.

2102021112 is an abundant number, since it is smaller than the sum of its proper divisors (3153031728).

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

2102021112 is a wasteful number, since it uses less digits than its factorization.

2102021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87584222 (or 87584218 counting only the distinct ones).

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

The square root of 2102021112 is about 45847.8037860048. The cubic root of 2102021112 is about 1280.9898576921.

Adding to 2102021112 its reverse (2111202012), we get a palindrome (4213223124).

Subtracting 2102021112 from its reverse (2111202012), we obtain a square (9180900 = 3030²).

The spelling of 2102021112 in words is "two billion, one hundred two million, twenty-one thousand, one hundred twelve".