111341021 has 4 divisors (see below), whose sum is σ = 121462944. Its totient is φ = 101219100.

The previous prime is 111341011. The next prime is 111341039. The reversal of 111341021 is 120143111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111341021 - 2¹⁴ = 111324637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111340987 and 111341005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111341011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5060945 + ... + 5060966.

It is an arithmetic number, because the mean of its divisors is an integer number (30365736).

Almost surely, 2^111341021 is an apocalyptic number.

111341021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111341021 is a deficient number, since it is larger than the sum of its proper divisors (10121923).

111341021 is a wasteful number, since it uses less digits than its factorization.

111341021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10121922.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 111341021 is about 10551.8254818775. The cubic root of 111341021 is about 481.0812157644.

Adding to 111341021 its reverse (120143111), we get a palindrome (231484132).

The spelling of 111341021 in words is "one hundred eleven million, three hundred forty-one thousand, twenty-one".