111100030121 has 4 divisors (see below), whose sum is σ = 111129019092. Its totient is φ = 111071041152.

The previous prime is 111100030073. The next prime is 111100030169. The reversal of 111100030121 is 121030001111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121030001111 = 211 ⋅573601901.

It is an interprime number because it is at equal distance from previous prime (111100030073) and next prime (111100030169).

It can be written as a sum of positive squares in 2 ways, for example, as 71564275225 + 39535754896 = 267515^2 + 198836^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100030121 - 2³⁰ = 110026288297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111100036121) 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, 14488736 + ... + 14496401.

It is an arithmetic number, because the mean of its divisors is an integer number (27782254773).

Almost surely, 2^111100030121 is an apocalyptic number.

It is an amenable number.

111100030121 is a deficient number, since it is larger than the sum of its proper divisors (28988971).

111100030121 is an equidigital number, since it uses as much as digits as its factorization.

111100030121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28988970.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 111100030121 its reverse (121030001111), we get a palindrome (232130031232).

The spelling of 111100030121 in words is "one hundred eleven billion, one hundred million, thirty thousand, one hundred twenty-one".