20112110212212 has 144 divisors (see below), whose sum is σ = 55296286211712. Its totient is φ = 6146120851200.

The previous prime is 20112110212177. The next prime is 20112110212237. The reversal of 20112110212212 is 21221201121102.

20112110212212 is a `hidden beast` number, since 20 + 11 + 211 + 0 + 212 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 in 47 ways as a sum of consecutive naturals, for example, 2846539 + ... + 6951762.

Almost surely, 2^{20112110212212} is an apocalyptic number.

It is an amenable number.

20112110212212 is an abundant number, since it is smaller than the sum of its proper divisors (35184175999500).

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

20112110212212 is a wasteful number, since it uses less digits than its factorization.

20112110212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9798438 (or 9798433 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20112110212212 its reverse (21221201121102), we get a palindrome (41333311333314).

The spelling of 20112110212212 in words is "twenty trillion, one hundred twelve billion, one hundred ten million, two hundred twelve thousand, two hundred twelve".