111101110021121 has 32 divisors (see below), whose sum is σ = 126805692844800. Its totient is φ = 96410064199680.

The previous prime is 111101110021093. The next prime is 111101110021129. The reversal of 111101110021121 is 121120011101111.

It is not a de Polignac number, because 111101110021121 - 2²⁶ = 111101042912257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111101110021096 and 111101110021105.

It is not an unprimeable number, because it can be changed into a prime (111101110021129) 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, 223273820 + ... + 223770866.

It is an arithmetic number, because the mean of its divisors is an integer number (3962677901400).

Almost surely, 2^{111101110021121} is an apocalyptic number.

111101110021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111101110021121 is a deficient number, since it is larger than the sum of its proper divisors (15704582823679).

111101110021121 is a wasteful number, since it uses less digits than its factorization.

111101110021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505049.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 111101110021121 its reverse (121120011101111), we get a palindrome (232221121122232).

The spelling of 111101110021121 in words is "one hundred eleven trillion, one hundred one billion, one hundred ten million, twenty-one thousand, one hundred twenty-one".