2121021211112 has 16 divisors (see below), whose sum is σ = 3987576746340. Its totient is φ = 1057667412096.

The previous prime is 2121021211103. The next prime is 2121021211159. The reversal of 2121021211112 is 2111121201212.

It can be written as a sum of positive squares in 2 ways, for example, as 1869492882436 + 251528328676 = 1367294^2 + 501526^2 .

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, 355396013 + ... + 355401980.

Almost surely, 2^{2121021211112} is an apocalyptic number.

It is an amenable number.

2121021211112 is a deficient number, since it is larger than the sum of its proper divisors (1866555535228).

2121021211112 is a wasteful number, since it uses less digits than its factorization.

2121021211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710798372 (or 710798368 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2121021211112 its reverse (2111121201212), we get a palindrome (4232142412324).

The spelling of 2121021211112 in words is "two trillion, one hundred twenty-one billion, twenty-one million, two hundred eleven thousand, one hundred twelve".