111101112220121 has 8 divisors (see below), whose sum is σ = 113811998705664. Its totient is φ = 108390278270880.

The previous prime is 111101112220081. The next prime is 111101112220129. The reversal of 111101112220121 is 121022211101111.

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

It is not a de Polignac number, because 111101112220121 - 2³⁸ = 110826234313177 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 111101112220121.

It is not an unprimeable number, because it can be changed into a prime (111101112220129) 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, 8836025 + ... + 17328518.

It is an arithmetic number, because the mean of its divisors is an integer number (14226499838208).

Almost surely, 2^{111101112220121} is an apocalyptic number.

It is an amenable number.

111101112220121 is a deficient number, since it is larger than the sum of its proper divisors (2710886485543).

111101112220121 is a wasteful number, since it uses less digits than its factorization.

111101112220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26268151.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111101112220121 its reverse (121022211101111), we get a palindrome (232123323321232).

The spelling of 111101112220121 in words is "one hundred eleven trillion, one hundred one billion, one hundred twelve million, two hundred twenty thousand, one hundred twenty-one".