2110111112221 has 8 divisors (see below), whose sum is σ = 2467638244544. Its totient is φ = 1766604651840.

The previous prime is 2110111112209. The next prime is 2110111112227. The reversal of 2110111112221 is 1222111110112.

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

It is not a de Polignac number, because 2110111112221 - 2¹⁹ = 2110110587933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110111112195 and 2110111112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110111112227) 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, 3505167660 + ... + 3505168261.

It is an arithmetic number, because the mean of its divisors is an integer number (308454780568).

Almost surely, 2^{2110111112221} is an apocalyptic number.

It is an amenable number.

2110111112221 is a deficient number, since it is larger than the sum of its proper divisors (357527132323).

2110111112221 is an equidigital number, since it uses as much as digits as its factorization.

2110111112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7010335971.

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

Adding to 2110111112221 its reverse (1222111110112), we get a palindrome (3332222222333).

The spelling of 2110111112221 in words is "two trillion, one hundred ten billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-one".