2121000012112 has 10 divisors (see below), whose sum is σ = 4109437523498. Its totient is φ = 1060500006048.

The previous prime is 2121000012083. The next prime is 2121000012199. The reversal of 2121000012112 is 2112100001212.

It can be written as a sum of positive squares in only one way, i.e., 2053844399376 + 67155612736 = 1433124^2 + 259144^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121000012092 and 2121000012101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66281250363 + ... + 66281250394.

Almost surely, 2^{2121000012112} is an apocalyptic number.

It is an amenable number.

2121000012112 is a deficient number, since it is larger than the sum of its proper divisors (1988437511386).

2121000012112 is a wasteful number, since it uses less digits than its factorization.

2121000012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132562500765 (or 132562500759 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2121000012112 its reverse (2112100001212), we get a palindrome (4233100013324).

The spelling of 2121000012112 in words is "two trillion, one hundred twenty-one billion, twelve thousand, one hundred twelve".