2110221221111 has 16 divisors (see below), whose sum is σ = 2194688714400. Its totient is φ = 2027509440000.

The previous prime is 2110221221099. The next prime is 2110221221137. The reversal of 2110221221111 is 1111221220112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110221221111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2110221221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110221221191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236096 + ... + 2067893.

It is an arithmetic number, because the mean of its divisors is an integer number (137168044650).

Almost surely, 2^{2110221221111} is an apocalyptic number.

2110221221111 is a deficient number, since it is larger than the sum of its proper divisors (84467493289).

2110221221111 is a wasteful number, since it uses less digits than its factorization.

2110221221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304370.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2110221221111 its reverse (1111221220112), we get a palindrome (3221442441223).

Subtracting from 2110221221111 its reverse (1111221220112), we obtain a palindrome (999000000999).

It can be divided in two parts, 2110221 and 221111, that added together give a palindrome (2331332).

The spelling of 2110221221111 in words is "two trillion, one hundred ten billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred eleven".