2121101012112 has 20 divisors (see below), whose sum is σ = 5479510948080. Its totient is φ = 707033670688.

The previous prime is 2121101012081. The next prime is 2121101012113. The reversal of 2121101012112 is 2112101011212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121101012091 and 2121101012100.

It is not an unprimeable number, because it can be changed into a prime (2121101012113) 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, 22094802162 + ... + 22094802257.

It is an arithmetic number, because the mean of its divisors is an integer number (273975547404).

Almost surely, 2^{2121101012112} is an apocalyptic number.

It is an amenable number.

2121101012112 is an abundant number, since it is smaller than the sum of its proper divisors (3358409935968).

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

2121101012112 is a wasteful number, since it uses less digits than its factorization.

2121101012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44189604430 (or 44189604424 counting only the distinct ones).

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

Adding to 2121101012112 its reverse (2112101011212), we get a palindrome (4233202023324).

The spelling of 2121101012112 in words is "two trillion, one hundred twenty-one billion, one hundred one million, twelve thousand, one hundred twelve".