111000243421 has 4 divisors (see below), whose sum is σ = 111034181344. Its totient is φ = 110966305500.

The previous prime is 111000243401. The next prime is 111000243499. The reversal of 111000243421 is 124342000111.

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 111000243421 - 2⁹ = 111000242909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000243401) 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, 16964055 + ... + 16970596.

It is an arithmetic number, because the mean of its divisors is an integer number (27758545336).

Almost surely, 2^111000243421 is an apocalyptic number.

It is an amenable number.

111000243421 is a deficient number, since it is larger than the sum of its proper divisors (33937923).

111000243421 is an equidigital number, since it uses as much as digits as its factorization.

111000243421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33937922.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 111000243421 its reverse (124342000111), we get a palindrome (235342243532).

The spelling of 111000243421 in words is "one hundred eleven billion, two hundred forty-three thousand, four hundred twenty-one".