2121012110112 has 96 divisors (see below), whose sum is σ = 6364429771392. Its totient is φ = 605870751744.

The previous prime is 2121012110111. The next prime is 2121012110117. The reversal of 2121012110112 is 2110112101212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 2121012110091 and 2121012110100.

It is not an unprimeable number, because it can be changed into a prime (2121012110111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2745888 + ... + 3432480.

It is an arithmetic number, because the mean of its divisors is an integer number (66296143452).

Almost surely, 2^{2121012110112} is an apocalyptic number.

It is an amenable number.

2121012110112 is an abundant number, since it is smaller than the sum of its proper divisors (4243417661280).

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

2121012110112 is a wasteful number, since it uses less digits than its factorization.

2121012110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691210 (or 691202 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2121012110112 its reverse (2110112101212), we get a palindrome (4231124211324).

The spelling of 2121012110112 in words is "two trillion, one hundred twenty-one billion, twelve million, one hundred ten thousand, one hundred twelve".