2100011112221 has 8 divisors (see below), whose sum is σ = 2294495201088. Its totient is φ = 1906122688000.

The previous prime is 2100011112203. The next prime is 2100011112257. The reversal of 2100011112221 is 1222111100012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2100011112221 - 2¹⁰ = 2100011111197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100011112196 and 2100011112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100011112821) 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 7 ways as a sum of consecutive naturals, for example, 148908785 + ... + 148922886.

It is an arithmetic number, because the mean of its divisors is an integer number (286811900136).

Almost surely, 2^{2100011112221} is an apocalyptic number.

It is an amenable number.

2100011112221 is a deficient number, since it is larger than the sum of its proper divisors (194484088867).

2100011112221 is a wasteful number, since it uses less digits than its factorization.

2100011112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297832323.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2100011112221 its reverse (1222111100012), we get a palindrome (3322122212233).

The spelling of 2100011112221 in words is "two trillion, one hundred billion, eleven million, one hundred twelve thousand, two hundred twenty-one".