2121101112 has 32 divisors (see below), whose sum is σ = 5710657680. Its totient is φ = 652646400.

The previous prime is 2121101083. The next prime is 2121101137. The reversal of 2121101112 is 2111011212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3398889 + ... + 3399512.

Almost surely, 2^2121101112 is an apocalyptic number.

It is an amenable number.

2121101112 is an abundant number, since it is smaller than the sum of its proper divisors (3589556568).

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

2121101112 is a wasteful number, since it uses less digits than its factorization.

2121101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798423 (or 6798419 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2121101112 is about 46055.4134928783. The cubic root of 2121101112 is about 1284.8540285469.

Adding to 2121101112 its reverse (2111011212), we get a palindrome (4232112324).

The spelling of 2121101112 in words is "two billion, one hundred twenty-one million, one hundred one thousand, one hundred twelve".