111020102221111 has 4 divisors (see below), whose sum is σ = 111546263843224. Its totient is φ = 110493940599000.

The previous prime is 111020102221103. The next prime is 111020102221123. The reversal of 111020102221111 is 111122201020111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111020102221111 - 2³ = 111020102221103 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 (111020102225111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263080810740 + ... + 263080811161.

It is an arithmetic number, because the mean of its divisors is an integer number (27886565960806).

Almost surely, 2^{111020102221111} is an apocalyptic number.

111020102221111 is a deficient number, since it is larger than the sum of its proper divisors (526161622113).

111020102221111 is an equidigital number, since it uses as much as digits as its factorization.

111020102221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526161622112.

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

Adding to 111020102221111 its reverse (111122201020111), we get a palindrome (222142303241222).

The spelling of 111020102221111 in words is "one hundred eleven trillion, twenty billion, one hundred two million, two hundred twenty-one thousand, one hundred eleven".