111030112021 has 4 divisors (see below), whose sum is σ = 111068440812. Its totient is φ = 110991783232.

The previous prime is 111030112009. The next prime is 111030112051. The reversal of 111030112021 is 120211030111.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39090825796 + 71939286225 = 197714^2 + 268215^2 .

It is a cyclic number.

It is not a de Polignac number, because 111030112021 - 2⁵ = 111030111989 is a prime.

It is a super-3 number, since 3×111030112021³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111030111992 and 111030112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111030112051) 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, 19160050 + ... + 19165843.

It is an arithmetic number, because the mean of its divisors is an integer number (27767110203).

Almost surely, 2^111030112021 is an apocalyptic number.

It is an amenable number.

111030112021 is a deficient number, since it is larger than the sum of its proper divisors (38328791).

111030112021 is an equidigital number, since it uses as much as digits as its factorization.

111030112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38328790.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111030112021 its reverse (120211030111), we get a palindrome (231241142132).

The spelling of 111030112021 in words is "one hundred eleven billion, thirty million, one hundred twelve thousand, twenty-one".