2112021110221 has 8 divisors (see below), whose sum is σ = 2306632352544. Its totient is φ = 1917844755120.

The previous prime is 2112021110197. The next prime is 2112021110233. The reversal of 2112021110221 is 1220111202112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112021110221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112021110195 and 2112021110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112021110261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108711646 + ... + 108731071.

It is an arithmetic number, because the mean of its divisors is an integer number (288329044068).

Almost surely, 2^{2112021110221} is an apocalyptic number.

It is an amenable number.

2112021110221 is a deficient number, since it is larger than the sum of its proper divisors (194611242323).

2112021110221 is a wasteful number, since it uses less digits than its factorization.

2112021110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217443611.

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

Adding to 2112021110221 its reverse (1220111202112), we get a palindrome (3332132312333).

The spelling of 2112021110221 in words is "two trillion, one hundred twelve billion, twenty-one million, one hundred ten thousand, two hundred twenty-one".