111342021 has 8 divisors (see below), whose sum is σ = 169664064. Its totient is φ = 63624000.

The previous prime is 111342017. The next prime is 111342031. The reversal of 111342021 is 120243111.

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

It is not a de Polignac number, because 111342021 - 2² = 111342017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111342001) 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, 2650980 + ... + 2651021.

It is an arithmetic number, because the mean of its divisors is an integer number (21208008).

Almost surely, 2^111342021 is an apocalyptic number.

It is an amenable number.

111342021 is a deficient number, since it is larger than the sum of its proper divisors (58322043).

111342021 is an equidigital number, since it uses as much as digits as its factorization.

111342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302011.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 111342021 is about 10551.8728669369. The cubic root of 111342021 is about 481.0826560236.

Adding to 111342021 its reverse (120243111), we get a palindrome (231585132).

It can be divided in two parts, 1113 and 42021, that added together give a palindrome (43134).

The spelling of 111342021 in words is "one hundred eleven million, three hundred forty-two thousand, twenty-one".