2101112021212 has 24 divisors (see below), whose sum is σ = 3705374155280. Its totient is φ = 1042451804160.

The previous prime is 2101112021159. The next prime is 2101112021213. The reversal of 2101112021212 is 2121202111012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101112021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1799589 + ... + 2727772.

Almost surely, 2^{2101112021212} is an apocalyptic number.

It is an amenable number.

2101112021212 is a deficient number, since it is larger than the sum of its proper divisors (1604262134068).

2101112021212 is a wasteful number, since it uses less digits than its factorization.

2101112021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4528261 (or 4528259 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2101112021212 its reverse (2121202111012), we get a palindrome (4222314132224).

The spelling of 2101112021212 in words is "two trillion, one hundred one billion, one hundred twelve million, twenty-one thousand, two hundred twelve".