2121210100112 has 40 divisors (see below), whose sum is σ = 4332777624960. Its totient is φ = 1003244918400.

The previous prime is 2121210100043. The next prime is 2121210100157. The reversal of 2121210100112 is 2110010121212.

It is a super-3 number, since 3×2121210100112³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 5144264 + ... + 5541287.

It is an arithmetic number, because the mean of its divisors is an integer number (108319440624).

Almost surely, 2^{2121210100112} is an apocalyptic number.

It is an amenable number.

2121210100112 is an abundant number, since it is smaller than the sum of its proper divisors (2211567524848).

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

2121210100112 is a wasteful number, since it uses less digits than its factorization.

2121210100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686231 (or 10686225 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2121210100112 its reverse (2110010121212), we get a palindrome (4231220221324).

The spelling of 2121210100112 in words is "two trillion, one hundred twenty-one billion, two hundred ten million, one hundred thousand, one hundred twelve".