2121434103112 has 16 divisors (see below), whose sum is σ = 3977718158700. Its totient is φ = 1060709260800.

The previous prime is 2121434103091. The next prime is 2121434103163. The reversal of 2121434103112 is 2113014341212.

It can be written as a sum of positive squares in 2 ways, for example, as 2092495330116 + 28938772996 = 1446546^2 + 170114^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278112 + ... + 2078512.

Almost surely, 2^{2121434103112} is an apocalyptic number.

It is an amenable number.

2121434103112 is a deficient number, since it is larger than the sum of its proper divisors (1856284055588).

2121434103112 is a wasteful number, since it uses less digits than its factorization.

2121434103112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947696 (or 1947692 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 2121434103112 its reverse (2113014341212), we get a palindrome (4234448444324).

The spelling of 2121434103112 in words is "two trillion, one hundred twenty-one billion, four hundred thirty-four million, one hundred three thousand, one hundred twelve".