2110110111221 has 8 divisors (see below), whose sum is σ = 2412168227520. Its totient is φ = 1808205448608.

The previous prime is 2110110111203. The next prime is 2110110111323. The reversal of 2110110111221 is 1221110110112.

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 2110110111221 - 2¹⁴ = 2110110094837 is a prime.

It is a super-2 number, since 2×2110110111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110110111196 and 2110110111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110110111721) 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, 38333951 + ... + 38388956.

It is an arithmetic number, because the mean of its divisors is an integer number (301521028440).

Almost surely, 2^{2110110111221} is an apocalyptic number.

It is an amenable number.

2110110111221 is a deficient number, since it is larger than the sum of its proper divisors (302058116299).

2110110111221 is an equidigital number, since it uses as much as digits as its factorization.

2110110111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76726843.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2110110111221 its reverse (1221110110112), we get a palindrome (3331220221333).

The spelling of 2110110111221 in words is "two trillion, one hundred ten billion, one hundred ten million, one hundred eleven thousand, two hundred twenty-one".