11112110212021 has 12 divisors (see below), whose sum is σ = 13920665541132. Its totient is φ = 8791999288128.

The previous prime is 11112110212013. The next prime is 11112110212033. The reversal of 11112110212021 is 12021201121111.

It can be written as a sum of positive squares in 2 ways, for example, as 5860083819121 + 5252026392900 = 2420761^2 + 2291730^2 .

It is not a de Polignac number, because 11112110212021 - 2³ = 11112110212013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11112110211986 and 11112110212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112110212001) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8722220880 + ... + 8722222153.

It is an arithmetic number, because the mean of its divisors is an integer number (1160055461761).

Almost surely, 2^{11112110212021} is an apocalyptic number.

It is an amenable number.

11112110212021 is a deficient number, since it is larger than the sum of its proper divisors (2808555329111).

11112110212021 is a wasteful number, since it uses less digits than its factorization.

11112110212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17444443060 (or 17444443053 counting only the distinct ones).

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

Adding to 11112110212021 its reverse (12021201121111), we get a palindrome (23133311333132).

The spelling of 11112110212021 in words is "eleven trillion, one hundred twelve billion, one hundred ten million, two hundred twelve thousand, twenty-one".