111221122102111 has 32 divisors (see below), whose sum is σ = 135088203230208. Its totient is φ = 89390977159680.

The previous prime is 111221122102067. The next prime is 111221122102117. The reversal of 111221122102111 is 111201221122111.

It is a de Polignac number, because none of the positive numbers 2^k-111221122102111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221122102117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35729596 + ... + 38717518.

It is an arithmetic number, because the mean of its divisors is an integer number (4221506350944).

Almost surely, 2^{111221122102111} is an apocalyptic number.

111221122102111 is a deficient number, since it is larger than the sum of its proper divisors (23867081128097).

111221122102111 is a wasteful number, since it uses less digits than its factorization.

111221122102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989111.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111221122102111 its reverse (111201221122111), we get a palindrome (222422343224222).

The spelling of 111221122102111 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred two thousand, one hundred eleven".