2112401030221 has 4 divisors (see below), whose sum is σ = 2132143096032. Its totient is φ = 2092658964412.

The previous prime is 2112401030189. The next prime is 2112401030263. The reversal of 2112401030221 is 1220301042112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2112401030221 - 2⁵ = 2112401030189 is a prime.

It is a super-2 number, since 2×2112401030221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112401030321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9871032745 + ... + 9871032958.

It is an arithmetic number, because the mean of its divisors is an integer number (533035774008).

Almost surely, 2^{2112401030221} is an apocalyptic number.

It is an amenable number.

2112401030221 is a deficient number, since it is larger than the sum of its proper divisors (19742065811).

2112401030221 is a wasteful number, since it uses less digits than its factorization.

2112401030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19742065810.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2112401030221 its reverse (1220301042112), we get a palindrome (3332702072333).

The spelling of 2112401030221 in words is "two trillion, one hundred twelve billion, four hundred one million, thirty thousand, two hundred twenty-one".